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Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Dec. 31, 2012	Feb. 22, 2013	Jun. 30, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	MCGRATH RENTCORP
Entity Central Index Key	0000752714
Document Type	10-K
Document Period End Date	Dec. 31, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Current Fiscal Year End Date	--12-31
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Filer Category	Accelerated Filer
Entity Public Float			$ 611,476,370
Entity Common Stock, Shares Outstanding		24,930,569

Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash	$ 1,612	$ 1,229
Accounts Receivable, net of allowance for doubtful accounts of $3,000 in 2012 and $1,500 in 2011	92,256	92,671
Rental Equipment, at cost:
Relocatable Modular Buildings	551,101	539,147
Electronic Test Equipment	266,934	258,586
Liquid and Solid Containment Tanks and Boxes	254,810	201,456
Rental Equipment, gross	1,072,845	999,189
Less Accumulated Depreciation	(353,992)	(326,043)
Rental Equipment, net	718,853	673,146
Property, Plant and Equipment, net	101,031	94,702
Prepaid Expenses and Other Assets	19,507	17,170
Intangible Assets, net	11,487	12,311
Goodwill	27,700	27,700
Total Assets	972,446	918,929
Liabilities:
Notes Payable	302,000	296,500
Accounts Payable and Accrued Liabilities	52,220	58,854
Deferred Income	26,924	25,067
Deferred Income Taxes, net	226,564	205,366
Total Liabilities	607,708	585,787
Commitments and Contingencies (Note 7)
Shareholders' Equity:
Common Stock, no par value Authorized 40,000 shares Issued and Outstanding 24,931 shares as of December 31, 2012 and 24,576 shares as of December 31, 2011	85,342	74,878
Retained Earnings	279,396	258,264
Total Shareholders' Equity	364,738	333,142
Total Liabilities and Shareholders' Equity	$ 972,446	$ 918,929

Consolidated Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 3,000	$ 1,500
Common Stock, par value
Common Stock, shares authorized	40,000	40,000
Common Stock, shares issued	24,931	24,576
Common Stock, shares outstanding	24,931	24,576

Consolidated Statements of Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Revenues
Rental	$ 248,444	$ 234,906	$ 200,615
Rental Related Services	46,920	39,486	34,702
Rental Operations	295,364	274,392	235,317
Sales	66,444	66,382	54,055
Other	2,266	1,896	2,028
Total Revenues	364,074	342,670	291,400
Direct Costs of Rental Operations
Depreciation of Rental Equipment	63,819	60,187	56,399
Rental Related Services	37,207	30,692	26,542
Other	45,581	39,859	40,007
Total Direct Costs of Rental Operations	146,607	130,738	122,948
Cost of Sales	49,173	45,141	37,637
Total Costs of Revenues	195,780	175,879	160,585
Gross Profit	168,294	166,791	130,815
Selling and Administrative Expenses	86,278	78,127	65,579
Income from Operations	82,016	88,664	65,236
Interest Expense	9,149	7,606	6,186
Income before Provision for Income Taxes	72,867	81,058	59,050
Provision for Income Taxes	28,090	31,456	22,571
Net Income	$ 44,777	$ 49,602	$ 36,479
Earnings Per Share:
Basic	$ 1.80	$ 2.04	$ 1.52
Diluted	$ 1.78	$ 2.00	$ 1.50
Shares Used in Per Share Calculations:
Basic	24,759	24,349	23,944
Diluted	25,156	24,760	24,289
Dividends Declared Per Share	$ 0.94	$ 0.92	$ 0.90

Consolidated Statements of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Retained Earnings
Balance at Dec. 31, 2009	$ 267,413	$ 50,869	$ 216,544
Balance, Shares at Dec. 31, 2009		23,795
Net Income	36,479		36,479
Non-Cash Stock-Based Compensation	4,227	$ 4,227
Common Stock Issued under Stock Plans, net of Shares Withheld for Employee Taxes	7,506	$ 7,506
Common Stock Issued under Stock Plans, net of Shares Withheld for Employee Taxes, Shares		440
Excess Tax Benefit from Equity Awards	1,021	$ 1,021
Dividends Accrued of $0.90, $0.92, and $0.94 Per Share in 2010, 2011 and 2012 respectively	(21,669)		(21,669)
Balance at Dec. 31, 2010	294,977	$ 63,623	231,354
Balance, Shares at Dec. 31, 2010		24,235
Net Income	9,614
Balance at Mar. 31, 2011	300,976
Balance at Dec. 31, 2010	294,977	$ 63,623	231,354
Balance, Shares at Dec. 31, 2010		24,235
Net Income	49,602		49,602
Non-Cash Stock-Based Compensation	5,221	$ 5,221
Common Stock Issued under Stock Plans, net of Shares Withheld for Employee Taxes	5,054	$ 5,054
Common Stock Issued under Stock Plans, net of Shares Withheld for Employee Taxes, Shares		341
Excess Tax Benefit from Equity Awards	980	$ 980
Dividends Accrued of $0.90, $0.92, and $0.94 Per Share in 2010, 2011 and 2012 respectively	(22,692)		(22,692)
Balance at Dec. 31, 2011	$ 333,142	$ 74,878	258,264
Balance, Shares at Dec. 31, 2011	24,576	24,576
Balance at Mar. 31, 2011	$ 300,976
Net Income	11,406
Balance at Jun. 30, 2011	309,322
Net Income	15,355
Balance at Sep. 30, 2011	320,410
Net Income	13,227
Balance at Dec. 31, 2011	$ 333,142	$ 74,878	258,264
Balance, Shares at Dec. 31, 2011	24,576	24,576
Net Income	$ 9,911
Balance at Mar. 31, 2012	341,853
Balance at Dec. 31, 2011	$ 333,142	$ 74,878	258,264
Balance, Shares at Dec. 31, 2011	24,576	24,576
Net Income	$ 44,777		44,777
Non-Cash Stock-Based Compensation	3,840	$ 3,840
Common Stock Issued under Stock Plans, net of Shares Withheld for Employee Taxes	5,591	$ 5,591
Common Stock Issued under Stock Plans, net of Shares Withheld for Employee Taxes, Shares		355
Excess Tax Benefit from Equity Awards	1,033	$ 1,033
Dividends Accrued of $0.90, $0.92, and $0.94 Per Share in 2010, 2011 and 2012 respectively	(23,645)		(23,645)
Balance at Dec. 31, 2012	$ 364,738	$ 85,342	279,396
Balance, Shares at Dec. 31, 2012	24,931	24,931
Balance at Mar. 31, 2012	$ 341,853
Net Income	10,479
Balance at Jun. 30, 2012	347,500
Net Income	12,451
Balance at Sep. 30, 2012	355,758
Net Income	11,936
Balance at Dec. 31, 2012	$ 364,738	$ 85,342	$ 279,396
Balance, Shares at Dec. 31, 2012	24,931	24,931

- Definition

This element represents the amount of recognized equity-based compensation during the period, that is, the amount recognized as expense in the income statement (or as asset if compensation is capitalized). Alternate captions include the words "stock-based compensation".

+ References

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+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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+ Details

- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References + Details

Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Dividends accrued per share	$ 0.94	$ 0.92	$ 0.90
Retained Earnings
Dividends accrued per share	$ 0.94	$ 0.92	$ 0.90

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Cash Flows from Operating Activities:
Net Income	$ 44,777	$ 49,602	$ 36,479
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and Amortization	72,476	67,395	62,577
Provision for Doubtful Accounts	4,263	1,755	1,494
Non-Cash Stock-Based Compensation	3,840	5,221	4,227
Gain on Sale of Used Rental Equipment	(12,389)	(12,444)	(11,728)
Change In:
Accounts Receivable	(3,848)	(17,938)	(7,385)
Income Taxes Receivable		6,131	120
Prepaid Expenses and Other Assets	(2,337)	(3,226)	296
Accounts Payable and Accrued Liabilities	(3,456)	5,715	3,399
Deferred Income	1,857	1,277	(954)
Deferred Income Taxes	21,198	25,823	12,073
Net Cash Provided by Operating Activities	126,381	129,311	100,598
Cash Flows from Investing Activities:
Payments Related to Acquisition of Adler Tanks			(39)
Purchase of Rental Equipment	(131,805)	(154,963)	(122,749)
Purchase of Property, Plant and Equipment	(14,161)	(17,204)	(12,144)
Proceeds from Sale of Used Rental Equipment	30,970	28,453	28,694
Net Cash Used in Investing Activities	(114,996)	(143,714)	(106,238)
Cash Flows from Financing Activities:
Net Borrowings (Repayments) Under Bank Lines of Credit	5,500	(57,140)	30,306
Borrowings Under Private Placement		100,000
Principal Payments on Senior Notes		(12,000)	(12,000)
Proceeds from the Exercise of Stock Options	5,591	5,054	7,506
Excess Tax Benefit from Exercise and Disqualifying Disposition of Stock Options	1,033	980	1,021
Payment of Dividends	(23,126)	(22,252)	(21,390)
Net Cash Provided by (Used in) Financing Activities	(11,002)	14,642	5,443
Net Increase (Decrease) in Cash	383	239	(197)
Cash Balance, beginning of period	1,229	990	1,187
Cash Balance, end of period	1,612	1,229	990
Interest Paid, during the period	9,107	6,877	6,306
Income Taxes Paid (Refunds Received), during the period	5,842	(1,480)	9,342
Dividends Accrued During the period, not yet paid	6,194	5,952	5,513
Rental Equipment Acquisitions, not yet paid	$ 4,491	$ 8,186	$ 5,388

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies [Abstract]

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

NOTE 1.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Organization

McGrath RentCorp and its wholly-owned subsidiaries (the “Company”) is a California corporation organized in 1979. The Company is a diversified business to business rental company with three rental products; relocatable modular buildings, electronic test equipment and liquid and solid containment tanks and boxes. Although the Company’s primary emphasis is on equipment rentals, sales of equipment occur in the normal course of business. The Company is comprised of four business segments: its modular building division (“Mobile Modular”), its electronic test equipment division (“TRS-RenTelco”), its containment solutions for the storage of hazardous and non-hazardous liquids and solids division (“Adler Tanks”) and its classroom manufacturing division selling modular classrooms in California (“Enviroplex”).

Principles of Consolidation

The consolidated financial statements include the accounts of McGrath RentCorp and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.

Revenue Recognition

Rental revenue from operating leases is recognized on a straight-line basis over the term of the lease. Rental billings for periods extending beyond period end are recorded as deferred income and are recognized when earned. Rental related services revenue is primarily associated with relocatable modular building leases and consists of billings to customers for modifications, delivery, installation, building, additional site-related work, and dismantle and return delivery. Revenue from these services is an integral part of the negotiated lease agreement with customers and is recognized on a straight-line basis over the term of the lease. Revenues associated with liquid and solid containment solutions consists of billings for delivery, removal and cleaning of the tanks and boxes. These revenues are recognized in the period performed.

Sales revenue is recognized upon delivery and installation of the equipment to customers. Certain leases are accounted for as sales-type leases. For these leases, sales revenue and the related accounts receivable are recognized upon delivery and installation of the equipment and the unearned interest is recognized over the lease term on a basis which results in a constant rate of return on the unrecovered lease investment.

Other revenue is recognized when earned and primarily includes interest income on sales-type leases, rental income on facility rentals and certain logistics services.

Sales taxes charged to customers are reported on a net basis and are excluded from revenues and expenses.

Depreciation of Rental Equipment

Rental equipment is depreciated on a straight-line basis for financial reporting purposes and on an accelerated basis for income tax purposes. The costs of major refurbishment of relocatable modular buildings and portable storage containers are capitalized to the extent the refurbishment significantly adds value to, or extends the life of the equipment. Maintenance and repairs are expensed as incurred.

The estimated useful lives and residual values of the Company’s rental equipment used for financial reporting purposes are as follows:


Relocatable modular buildings		18 years, 50% residual value
Relocatable modular accessories		3 to 18 years, no residual value
Portable storage containers		25 years, 62.5% residual value
Electronic test equipment and accessories		1 to 8 years, no residual value
Liquid and solid containment tanks and boxes and accessories		10 to 20 years, no residual value

Costs of Rental Related Services

Costs of rental related services are primarily associated with relocatable modular building leases and consist of costs for services to be provided under the negotiated lease agreement for delivery, installation, modifications, skirting, additional site-related work, and dismantle and return delivery. Costs related to these services are recognized on a straight-line basis over the term of the lease. Costs of rental related services associated with liquid and solid containment solutions consists of costs of delivery, removal and cleaning of the tanks and boxes. These costs are recognized in the period the service is performed.

Impairment of Long-Lived Assets

The Company evaluates the carrying value of rental equipment and identifiable definite lived intangible assets for impairment whenever events or circumstances have occurred that would indicate the carrying amount may not be fully recoverable. A key element in determining the recoverability of long-lived assets is the Company’s outlook as to the future market conditions for its rental equipment. If the carrying amount is not fully recoverable, an impairment loss is recognized to reduce the carrying amount to fair value. The Company determines fair value based upon the condition of the rental equipment and the projected net cash flows from its rental and sale considering current market conditions. Goodwill and identifiable indefinite lived assets are evaluated for potential impairment annually or when circumstances indicate potential impairment may have occured. Impairment losses, if any, are determined based upon the estimated fair value of the asset. There were no impairments of long-lived assets during the years ended December 31, 2012, 2011 and 2010.

Other Direct Costs of Rental Operations

Other direct costs of rental operations include direct labor, supplies, repairs, insurance, property taxes, license fees and certain modular lease costs charged to customers in the negotiated rental rate, which are recognized on a straight-line basis over the term of the lease.

Cost of Sales

Cost of sales in the Consolidated Statements of Income includes the carrying value of the equipment sold and all direct costs associated with the sale.

Warranty Reserves

Sales of new relocatable modular buildings, portable storage containers, electronic test equipment and related accessories and liquid and solid containment tanks and boxes not manufactured by the Company are typically covered by warranties provided by the manufacturer of the products sold. The Company typically provides limited 90-day warranties for certain sales of used rental equipment and one-year warranties on equipment manufactured by Enviroplex. Although the Company’s policy is to provide reserves for warranties when required for specific circumstances, the Company has not found it necessary to establish such reserves to date as warranty costs have not been significant.

Property, Plant and Equipment

Property, plant and equipment are stated at cost, net of accumulated depreciation. Depreciation is recognized on a straight-line basis for financial reporting purposes, and on an accelerated basis for income tax purposes. Depreciation expenses for property, plant and equipment is included in “Selling and Administrative Expenses” in the Consolidated Statements of Income. Maintenance and repairs are expensed as incurred.

Property, plant and equipment consist of the following:


(dollar amounts in thousands)	Estimated Useful Life In Years		December 31,
(dollar amounts in thousands)	Estimated Useful Life In Years		2012			2011
Land		Indefinite	$	35,371		$	30,466
Land Improvements		20 – 50		38,708			38,470
Buildings		30		20,522			18,853
Furniture, Office and Computer Equipment		3 – 10		26,496			24,942
Machinery and Service Equipment		5 – 20		16,186			13,000

				137,283			125,731
Less Accumulated Depreciation				(39,301	)		(31,712	)

				97,982			94,019
Construction In Progress				3,049			683

				$101,031			$94,702

Construction in progress at December 31, 2012 consisted primarily of costs related to acquisition of land and land improvements. Construction in progress at December 31, 2011 consisted primarily of costs related to information technology projects.

Advertising Costs

Advertising costs are expensed as incurred. Total advertising expenses were $2.5 million, $2.1 million and $1.7 million for the years ended December 31, 2012, 2011 and 2010.

Income Taxes

Income taxes are accounted for using an asset and liability approach. Deferred tax assets and liabilities are recorded based on the differences between the financial statement and tax bases of assets and liabilities at the tax rates in effect when these differences are expected to reverse.

Goodwill and Intangible Assets

Purchase prices of acquired businesses have been allocated to the assets and liabilities acquired based on the estimated fair values on the respective acquisition dates. Based on these values, the excess purchase prices over the fair value of the net assets acquired were allocated to goodwill and other intangible assets. Goodwill and intangible assets consists primarily of intangible assets of $37.2 million from the 2008 acquisition of Adler Tanks. Intangible assets related to customer relationships are amortized over eleven years. At December 31, 2012 and 2011, goodwill and trade name intangible assets which have indefinite lives totaled $33.4 million.

The Company assesses potential impairment of its goodwill and intangible assets when there is evidence that events or circumstances have occurred that would indicate the recovery of an asset’s carrying value is unlikely. The Company also assesses potential impairment of its goodwill and intangible assets on an annual basis regardless of whether there is evidence of impairment. If indicators of impairment were to be present in intangible assets used in operations and future discounted cash flows were not expected to be sufficient to recover the assets’ carrying amount, an impairment loss would be charged to expense in the period identified. The amount of an impairment loss would be recognized as the excess of the asset’s carrying value over its fair value. Factors the Company considers important, which may cause impairment include, among others, significant changes in the manner of use of the acquired asset, negative industry or economic trends, and significant underperformance relative to historical or projected operating results.

The impairment review of the Company’s goodwill and indefinite lived assets is performed by first assessing qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. In the first step, the fair value of the reporting unit is compared to its carrying value to determine if the goodwill and intangible assets are impaired. If the fair value of the reporting unit exceeds the carrying value of the net assets assigned to that unit, then goodwill and intangible assets are not impaired and no further testing is required. If the carrying value of the net assets assigned to the reporting unit were to exceed its fair value, then the second step is performed in order to determine the implied fair value of the reporting unit’s goodwill and intangible assets and an impairment loss is recorded for an amount equal to the difference between the implied fair value and the carrying value of the goodwill and intangible assets.

The Company conducted its annual impairment analysis in the fourth quarter of its fiscal year. The impairment analysis did not result in an impairment charge for the fiscal years ended 2012, 2011 or 2010. Determining the fair value of a reporting unit is judgmental and involves the use of significant estimates and assumptions. The Company based its fair value estimates on assumptions that it believes are reasonable but are uncertain and subject to changes in market conditions.

Earnings Per Share

Basic earnings per share (“EPS”) is computed as net income divided by the weighted average number of shares of common stock outstanding for the period. Diluted EPS is computed assuming conversion of all potentially dilutive securities including the dilutive effects of stock options, unvested restricted stock awards and other potentially dilutive securities. The table below presents the weighted-average common stock used to calculate basic and diluted earnings per share:


(in thousands)	Year Ended December 31,
	2012		2011		2010
Weighted-average common stock for calculating basic earnings per share		24,759		24,349		23,944
Effect of potentially dilutive securities from equity-based compensation		397		411		345

Weighted-average common stock for calculating diluted earnings per share		25,156		24,760		24,289

The following securities were not included in the computation of diluted earnings per share as their effect would have been anti-dilutive:


(in thousands)	Year Ended December 31,
	2012		2011		2010
Options to purchase common stock		1,049		1,131		1,066

Accounts Receivable and Concentration of Credit Risk

The Company’s accounts receivable consist of amounts due from customers for rentals, sales, financed sales and unbilled amounts for the portion of Mobile Modular end-of-lease services earned, which were negotiated as part of the lease agreement. Unbilled receivables related to end-of-lease services, which consists of dismantle and return of buildings, were $17.4 million at December 31, 2012 and $17.2 million at December 31, 2011. The Company sells primarily on 30-day terms, individually performs credit evaluation procedures on its customers on each transaction and will require security deposits from its customers when a significant credit risk is identified. The Company records an allowance for doubtful accounts in amounts equal to the estimated losses expected to be incurred in the collection of the accounts receivable. The estimated losses are based on historical collection experience in conjunction with an evaluation of the current status of the existing accounts. Customer accounts are written off against the allowance for doubtful accounts when an account is determined to be uncollectable. The allowance for doubtful accounts activity was as follows:


(in thousands)	2012			2011
Beginning Balance, January 1	$	1,500		$	1,700
Provision for doubtful accounts		4,263			1,755
Write-offs, net of recoveries		(2,763	)		(1,955	)

Ending Balance, December 31	$	3,000		$	1,500

Financial instruments that potentially subject the Company to concentration of credit risk consist primarily of trade accounts receivable. From time to time, the Company maintains cash balances in excess of the Federal Deposits Insurance limits.

Fair Value of Financial Instruments

The Company believes that the carrying amounts for cash, accounts receivable, accounts payable and notes payable approximate their fair values except for fixed rate debt included in notes payable which has an estimated fair value of $106.0 million and $107.0 million compared to the recorded value of $100.0 million as of December 31, 2012 and 2011, respectively. The estimates of fair value of the Company’s fixed rate debt are based on the borrowing rates currently available to the Company for bank loans with similar terms and average maturities.

Foreign Currency Transactions

The Company’s Canadian subsidiary, TRS-RenTelco Inc., a British Columbia corporation, functions as a branch sales office for TRS-RenTelco in Canada. Foreign currency transaction gains and losses of the Company’s Canadian subsidiary are reported in the results of operations in the period in which they occur. Currently, the Company does not use derivative instruments to hedge its economic exposure with respect to assets, liabilities and firm commitments as the foreign currency transactions and risks to date have not been significant.

Stock-Based Compensation

The Company measures stock-based compensation expense based on grant date fair value and recognizes that expense in earnings over the service period of each award. The Company utilizes the Black-Scholes option-pricing model to estimate the fair value of employee stock-based compensation at the date of grant, which requires the use of accounting judgment and financial estimates, including estimates of the expected term option holders will retain their vested stock options before exercising them, the estimated volatility of the Company’s stock price over the expected term and the expected number of options that will be forfeited prior to the completion of their vesting requirements. Application of alternative assumptions could produce significantly different estimates of the fair value of stock-based compensation amounts recognized in the Consolidated Statements of Income.

For the years ended December 31, 2012, 2011 and 2010, the non-cash stock-based compensation expense included in Selling and Administrative Expenses in the Consolidated Statements of Income was $3.9 million, $5.2 million and $4.2 million, before provision for income taxes, respectively. The Company recorded a tax benefit of approximately $1.5 million, $2.0 million and $1.6 million related to the aforementioned stock-based compensation expenses. For the years ended December 31, 2012, 2011 and 2010, the stock-based compensation expenses, net of taxes, reduced net income by $2.4 million, $3.2 million and $2.6 million, respectively or $0.09, $0.13, and $0.11 per diluted share for each period, respectively.

The fair value of each option granted was estimated on the date of grant using the Black-Scholes option-pricing model using the following weighted average assumptions:


	Year Ended December 31,
	2012			2011			2010
Expected term (in years)		5.0			5.0			5.2
Expected volatility		52.1	%		51.6	%		51.2	%
Expected dividend yields		3.2	%		3.4	%		3.8	%
Risk-free interest rates		0.8	%		2.0	%		2.2	%

The Company monitors option exercise behavior to determine the appropriate homogenous groups for estimation purposes. Currently, the Company’s option activity is separated into two categories: directors and employees. The expected term of the options represents the estimated period of time until exercised and is based on historical experience, giving consideration to the option terms, vesting schedules and expectations of future employee behavior. Expected stock volatility is based on historical stock price volatility of the Company and the risk-free interest rates are based on U.S. Treasury yields in effect on the date of the option grant for the estimated period the options will be outstanding. The expected dividend yield is based upon the current dividend annualized as a percentage of the grant exercise price.

The weighted average grant date fair value per share was $10.28, $9.68 and $8.12 during the years ended December 31, 2012, 2011 and 2010, respectively.

Use of Estimates

The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions in determining reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during each period presented. Actual results could differ from those estimates. The most significant estimates included in the financial statements are the future cash flows and fair values used to determine the recoverability of the rental equipment and identifiable definite lived intangible assets carrying value, the various assets’ useful lives and residual values, and the allowance for doubtful accounts.

Comprehensive Income

Comprehensive income is equivalent to net income for all periods presented.

Financed Lease Receivables

12 Months Ended

Dec. 31, 2012

Financed Lease Receivables [Abstract]

FINANCED LEASE RECEIVABLES

NOTE 2.

FINANCED LEASE RECEIVABLES

The Company has entered into sales type leases to finance certain equipment sales to customers. The lease agreements have a bargain purchase option at the end of the lease term. The minimum lease payments receivable and the net investment included in accounts receivable for such leases are as follows:


(in thousands)	December 31,
	2012			2011
Gross minimum lease payments receivable	$	2,326		$	2,612
Less—unearned interest		(201	)		(226	)

Net investment in sales type lease receivables	$	2,125		$	2,386

As of December 31, 2012, the future minimum lease payments under non-cancelable sales-type leases to be received in 2013 and thereafter are as follows:


(in thousands)
Year Ended December 31,
2013	$	1,905
2014		416
2015		5
2017		—

Total minimum future lease payments		$2,326

- Definition

The entire disclosure for lessor entity's leasing arrangements for operating, capital and leveraged leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 55
-Paragraph 47
-URI http://asc.fasb.org/extlink&oid=6584217&loc=d3e38847-112698

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6952072&loc=d3e45424-112738

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6453916&loc=d3e41460-112716

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952072&loc=d3e45377-112738

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6452767&loc=d3e37045-112695

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6453916&loc=d3e41457-112716

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 20
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 840
-SubTopic 30
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6952072&loc=d3e45437-112738

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 13
-Paragraph 23
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Notes Payable

12 Months Ended

Dec. 31, 2012

Notes Payable [Abstract]

NOTES PAYABLE

NOTE 3.

NOTES PAYABLE

Notes Payable consists of the following:


(in thousands)	December 31,
	2012		2011
Unsecured Revolving Lines of Credit	$	202,000	$	196,500
4.03% Senior Notes due in 2018		100,000		100,000

	$	302,000	$	296,500

As of December 31, 2012, the future minimum payments under Unsecured Revolving Lines of Credit and 4.03% Senior Notes due in 2018 in 2013 and thereafter are as follows:


(in thousands)
Year Ended December 31,
2013	$	—
2014		20,000
2015		20,000
2016		20,000
2017		222,000
Thereafter		20,000

		$302,000

Unsecured Revolving Lines of Credit

In June 2012, the Company entered into an amended and restated credit agreement with a syndicate of banks (the “Amended Credit Facility”). The five-year facility matures on June 15, 2017 and replaces the Company’s prior $350.0 million unsecured revolving credit facility. The Amended Credit Facility provides for a $420.0 million unsecured revolving credit facility (which may be increased to $450.0 million with $30.0 million of additional commitments), which includes a $25.0 million sublimit for the issuance of standby letters of credit and a $10.0 million sublimit for swingline loans.

In June 2012, the Company entered into a Credit Facility Letter Agreement and a Credit Line Note in favor of Union Bank, N.A., extending its line of credit facility related to its cash management services (“Sweep Service Facility”) and increasing the facility size from $5.0 million to $10.0 million. The Sweep Service Facility matures on the earlier of June 15, 2017, or the date the Company ceases to utilize Union Bank, N.A. for its cash management services.

At December 31, 2012, under the Amended Credit Facility and Sweep Service Facility, the Company had unsecured lines of credit that permit it to borrow up to $430.0 million of which $202.0 million was outstanding, and had capacity to borrow up to an additional $228.0 million. The Amended Credit Facility contains financial covenants requiring the Company to not (all defined terns used below not otherwise defined herein have the meaning assigned to such terms in the Amended Credit Facility):

•

Permit the Consolidated Fixed Charge Coverage Ratio as of the end of any fiscal quarter to be less than 2.50 to 1. At December 31, 2012, the actual ratio was 4.04 to 1.

•

Permit the Consolidated Leverage Ratio at any time during any period of four consecutive fiscal quarters to be greater than 2.75 to 1. At December 31, 2012, the actual ratio was 1.91 to 1.

•

Permit Tangible Net Worth as of the end of any fiscal quarter of the Company to be less than the sum of (i) $246,103,400 plus (ii) 25% of the Company’s Consolidated Net Income (as defined in the Amended Credit Facility) (but only if a positive number) for each fiscal quarter ended subsequent to December 31, 2011 plus (iii) 90% of the net cash proceeds from the issuance of the Company’s capital stock after December 31, 2011. At December 31, 2012, such sum was $262.6 million and the actual Tangible Net Worth of the Company was $325.6 million.

The following information relates to the lines of credit for each of the following periods:


(dollar amounts in thousands)	Year Ended December 31,
	2012			2011
Maximum amount outstanding	$	220,799		$	262,461
Average amount outstanding	$	206,514		$	206,227
Weighted average interest rate, during the period		2.51	%		2.22	%
Weighted average interest rate, end of period		1.71	%		1.79	%
Prime interest rate, end of period		3.25	%		3.25	%

4.03% Senior Notes Due in 2018

On April 21, 2011, the Company entered into a Note Purchase and Private Shelf Agreement (the “Note Purchase Agreement”) with Prudential Investment Management, Inc., The Prudential Insurance Company of America and Prudential Retirement Insurance and Annuity Company (collectively, the “Purchaser”), pursuant to which the Company agreed to sell an aggregate principal amount of $100 million of its 4.03% Series A Senior Notes (the “Senior Notes”) to the Purchaser. The Senior Notes are an unsecured obligation of the Company, due on April 21, 2018. Interest on these notes is due semi-annually in arrears and the principal is due in five equal annual installments, with the first payment due on April 21, 2014. In addition, the Note Purchase Agreement allows for the issuance and sale of additional senior notes to the Purchaser (the “Shelf Notes”) in the aggregate principal amount of $100 million, to mature no more than 12 years after the date of original issuance thereof, to have an average life of no more than 10 years and to bear interest on the unpaid balance. Among other restrictions, the Note Purchase Agreement, under which the Senior Notes were sold, contains financial covenants requiring the Company to not (all defined terms used below not otherwise defined herein have the meaning assigned to such terms in the Note Purchase Agreement):

•

Permit the Consolidated Fixed Charge Coverage Ratio of EBITDA to fixed charges as of the end of any fiscal quarter to be less than 2.50 to 1. At December 31, 2012, the actual ratio was 4.04 to 1.

•

Permit the Consolidated Leverage Ratio of funded debt to EBITDA at any time during any period of four consecutive quarters to be greater than 2.75 to 1. At December 31, 2012, the actual ratio was 1.91 to 1.

•

Permit Tangible Net Worth, calculated as of the last day of each fiscal quarter, to be less than the sum of (i) $229.0 million, plus (ii) 25% of net income for such fiscal quarter subsequent to December 31, 2010, plus (iii) 90% of the net cash proceeds from the issuance of the Company’s capital stock after December 31, 2010. At December 31, 2012, such sum was $262.6 million and the actual Tangible Net Worth of the Company was $325.6 million.

At December 31, 2012, the Company was in compliance with each of the aforementioned covenants. There are no anticipated trends that the Company is aware of that would indicate non-compliance with these covenants, though, significant deterioration in the Company’s financial performance could impact its ability to comply with these covenants.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References + Details

Income Taxes

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

INCOME TAXES

NOTE 4.

INCOME TAXES

The provision for income taxes consists of the following:


(in thousands)	Year Ended December 31,
	2012		2011		2010
Current	$	4,886	$	5,741	$	8,754
Deferred		23,204		25,715		13,817

	$	28,090	$	31,456	$	22,571

The reconciliation of the federal statutory tax rate to the Company’s effective tax rate is as follows:


	Year Ended December 31,
	2012			2011			2010
Federal statutory rate		35.0	%		35.0	%		35.0	%
State taxes, net of federal benefit		4.2			4.1			4.2
Other		(0.6	)		(0.3	)		(1.0	)

		38.6	%		38.8	%		38.2	%

The following table shows the deferred income taxes related to the temporary differences between the tax bases of assets and liabilities and the respective amounts included in “Deferred Income Taxes, net” on the Company’s Consolidated Balance Sheets:


(in thousands)	December 31,
	2012		2011
Deferred Tax Liabilities:
Accelerated Depreciation	$	248,515	$	238,912
Prepaid Costs Currently Deductible		4,597		4,178
Other		2,451		2,414

Total Deferred Tax Liabilities		255,563		245,504

Deferred Tax Assets:
Accrued Costs Not Yet Deductible		6,138		6,017
Allowance for Doubtful Accounts		1,163		582
Net Operating Loss Carry Forwards and Credits		12,103		25,495
Deferred Revenues		1,300		243
Stock Based Compensation		8,295		7,801

Total Deferred Tax Assets		28,999		40,138

Deferred Income Taxes, net	$	226,564	$	205,366

In 2012, 2011 and 2010 the Company obtained an excess tax benefit of $1.0 million each year from the exercise of non-qualified stock options and early dispositions of stock obtained through the exercise of incentive stock options by employees. The tax benefit was recorded as common stock in conjunction with the proceeds received from the exercise of the stock options.

As of December 31, 2012, the Company’s federal net operating losses for tax return purposes were $12.3 million. If not utilized, these carry forwards will begin to expire in 2031. As of December 31, 2012, the Company had state and foreign tax credit carry forwards of $6.8 million, which will begin to expire in 2020, if not utilized.

The Company recognizes the financial statement benefit of a tax position only after determining that the relevant tax authority would more likely than not sustain the position following an audit. For tax positions meeting the more-likely-than-not threshold, the amount recognized in the financial statements is the largest benefit that has a greater than 50 percent likelihood of being realized upon ultimate settlement with the relevant tax authority. The Company evaluated all of its tax positions for which the statute of limitations remained open and determined there were no material unrecognized tax benefits as of December 31, 2012 and 2011. In addition, there have been no material changes in unrecognized benefits during 2012, 2011 and 2010.

The Company is subject to income taxes in the U.S. federal jurisdiction, and various states and foreign jurisdictions. Tax regulations within each jurisdiction are subject to interpretation of the related tax laws and regulations and require the application of significant judgment. With few exceptions, the Company is no longer subject to U.S. federal, state and local, or non-U.S. income tax examinations by tax authorities for the years before 2008.

Our income tax returns are subject to examination by federal, state and foreign tax authorities. We are currently under examination by the California Franchise Tax Board for the 2007 and 2008 tax years. There may be differing interpretations of tax laws and regulations, and as a result, disputes may arise with these tax authorities involving the timing and amount of deductions and allocation of income.

The Company recognizes interest and penalties related to unrecognized tax benefits in the provision for income taxes for all periods presented. Such interest and penalties were not significant for the years ended December 31, 2012, 2011 and 2010.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References

+ Details

Benefit Plans

12 Months Ended

Dec. 31, 2012

Benefit Plans [Abstract]

BENEFIT PLANS

NOTE 5.

BENEFIT PLANS

Stock Plans

The Company adopted the 2007 Stock Incentive Plan (the “2007 Plan”) effective June 6, 2007, under which 1,875,000 shares of common stock of the Company, plus the number of shares that remained available for grants of awards under the Company’s 1998 Stock Option Plan (the “1998 Plan”) and those shares that become available as a result of forfeiture, termination, or expiration of awards previously granted under the 1998 Plan, were reserved for the grant of awards to its employees, directors and consultants to acquire common stock of the Company. The 2007 Plan provides for the grant of awards in the form of stock options, stock appreciation rights, restricted stock, restricted stock units or other rights and benefits. Options under the 2007 Plan are granted at an exercise price of not less than 100% of the fair market value of the Company’s common stock on the date of grant. The 2007 Plan replaced the Company’s 1998 Plan and the 2000 Long-Term Bonus Plan.

Stock Options

As of December 31, 2012, a cumulative total of 6,424,600 shares subject to options have been granted with exercise prices ranging from $11.74 to $34.28. Of these, options have been exercised for the purchase of 2,733,845 shares, while options for 852,202 shares have been terminated, and options for 2,838,553 shares remain outstanding under the stock plans. Most of these options vest over five years and expire seven and ten years after grant. To date, no options have been issued to any of the Company’s non-employee advisors. As of December 31, 2012, 1,561,002 shares remain available for issuance of awards under the stock plans.

Option activity and options exercisable including the weighted average exercise price for the three years ended December 31, 2012 are as follows:


	Year Ended December 31,
	2012					2011					2010
	Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price
Options outstanding at January 1,		3,086,019		$	23.52		3,344,450		$	22.80		3,504,319		$	22.09
Options granted during the year		128,500			29.63		160,600			27.41		282,000			23.72
Options exercised during the year		(327,498	)		17.95		(309,447	)		17.19		(422,069	)		17.78
Options terminated during the year		(48,468	)		27.63		(109,584	)		25.01		(19,800	)		22.03

Options outstanding at December 31,		2,838,553			24.37		3,086,019			23.52		3,344,450			22.80

Options exercisable at December 31,		2,322,258			24.64		2,306,159			24.43		2,148,100			23.91

The intrinsic value of stock options at any point in time is calculated as the difference between the exercise price of the underlying awards and the quoted price of the Company’s common stock. The aggregate intrinsic value of options outstanding as of December 31, 2012 and 2011 was $13.4 million and $16.9 million, respectively, and had a weighted average remaining contract life of 2.74 years and 3.52 years, respectively. The intrinsic value for options exercisable as of December 31, 2012 and 2011 was $10.4 million and $10.5 million, respectively, and had a weighted average remaining contract life of 2.36 years and 3.22 years, respectively. The aggregate intrinsic value of options exercised and sold under the Company’s stock option plans was $3.7 million, $3.7 million and $3.6 million for the years ended December 31, 2012, 2011 and 2010, respectively, determined as of the date of option exercise. As of December 31, 2012, there was approximately $3.5 million of total unrecognized compensation cost related to unvested share-based compensation option arrangements granted under the Company’s stock plans, which is expected to be recognized over a weighted-average period of 1.6 years.

The following table indicates the options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price at December 31, 2012:


	Options Outstanding						Options Exercisable
Exercise Price	Number Outstanding at December 31, 2012		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable at December 31, 2012		Weighted Average Exercise Price
$10–15		20,000		0.25	$	11.74		20,000	$	11.74
15–20		420,608		2.86		15.65		265,608		15.67
20–25		1,161,150		2.57		21.73		1,008,275		21.55
25–30		688,295		3.61		28.93		575,375		29.81
30–35		548,500		2.03		31.39		453,000		31.39

10–35		2,838,553		2.74		24.37		2,322,258		24.64

Restricted Stock Units

The following table summarizes the activity of the Company’s restricted stock units for the years ended December 31, 2012 and 2011:


	Year Ended December 31,
	2012					2011
	Number of Shares			Weighted Average Grant Date Fair Value		Number of Shares			Weighted Average Grant Date Fair Value
Restricted stock unvested as of January 1,		187,810		$	26.33		110,200		$	23.61
Restricted stock granted during the year		109,200			31.37		125,800			27.99
Restricted stock vested during the year		(34,190	)		27.85		(39,105	)		23.91
Restricted stock forfeited during the year		—			—		(9,085	)		25.36

Restricted stock unvested as of December 31,		262,820			28.22		187,810			26.33

Stock-based compensation expense for restricted stock for the year ended December 31, 2012 and 2011 was $1.8 million and $2.6 million, respectively. As of December 31, 2012, the total unrecognized compensation expense net of forfeitures related to unvested restricted stock awards not yet recognized was $6.1 million and is expected to be recognized over a period of 3.3 years.

Employee Stock Ownership Plan

In 1985, the Company established a non-leveraged Employee Stock Ownership Plan (“Plan”). Under the terms of the Plan, as amended, the Company makes annual contributions in the form of cash or common stock of McGrath RentCorp to a trust for the benefit of eligible employees. Employees of the Company are generally eligible to participate in the Plan on the January 1^st, or July 1 ^st, immediately following the completion of the minimum of 1,000 hours and twelve months of service. The amount of the contribution is determined annually by the Board of Directors. There was no contribution approved in 2012, 2011 or 2010. Contributions to the Plan are allocated to participants following a formula based upon years of service and covered compensation. Dividends paid to Plan participants are treated as ordinary dividends and, in accordance with existing tax laws, are deducted by the Company in the year paid. For the years ended December 31, 2012, 2011 and 2010, dividends deducted by the Company were $0.2 million, $0.4 million and $0.5 million, respectively, which resulted in a tax benefit of approximately $0.1 million in 2012 and $0.2 million in 2011 and 2010.

401(k) Plans

In 1995, McGrath RentCorp established a contributory retirement plan, the McGrath RentCorp 401(k) Plan, as amended, covering eligible employees of McGrath RentCorp with at least three months of service. The McGrath RentCorp 401(k) Plan provides that each participant may annually contribute an elected percentage of his or her salary, not to exceed the statutory limit. McGrath RentCorp, at its discretion, may make contributions. Contributions are expensed in the year approved by the Board of Directors. The Company expensed $1.1 million in 2011. No amounts were expensed in 2012 and 2010.

In 1997, Enviroplex established a contributory retirement plan, the Enviroplex 401(k) Plan, as amended, covering eligible employees of Enviroplex with at least three months of service. The Enviroplex 401(k) Plan provides that each participant may annually contribute an elected percentage of his or her salary, not to exceed the statutory limit. Enviroplex at its discretion may make a matching contribution. Enviroplex made contributions of $35,000 in 2011. No contributions were made in 2012 and 2010.

Employee Stock Ownership and 401(k) Plans

On August 1, 2012 the Company amended and restated the Employee Stock Ownership Plan, the 401(k) Plans and the Enviroplex 401(k) Plans (“Plans”) to become the McGrath RentCorp Employee Stock Ownership and 401(k) Plan (the “KSOP”). In conjunction with this, the Plans’ assets totaling approximately $16.4 million in cash were concurrently transferred into the KSOP. The KSOP plan provides that each participant may annually contribute an elected percentage of his or her salary, not to exceed the statutory limit. The Company, at its discretion, may make matching contributions. Contributions are expensed in the year approved by the Board of Directors. Dividends on the Company’s stock held by the KSOP are treated as ordinary dividends and, in accordance with existing tax laws, are deducted by the Company in the year paid. For the year ended December 31, 2012 dividends deducted by the Company were $0.2 million, which resulted in a tax benefit of approximately $0.1 million in 2012.

KSOP shares outstanding at December 31, 2012 were 354,467, or less than 2% of total common shares outstanding, and are included in basic and diluted earnings per share calculations.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 50
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6406099&loc=d3e25284-112666

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 40
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 1
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph 64, 65, A240
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Statement of Position (SOP)
-Number 93-6
-Paragraph 53
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Shareholders' Equity

12 Months Ended

Dec. 31, 2012

Shareholders' Equity [Abstract]

SHAREHOLDERS' EQUITY

NOTE 6.

SHAREHOLDERS’ EQUITY

The Company has in the past made purchases of shares of its common stock from time to time in the over-the-counter market (NASDAQ) and/or through privately negotiated, block transactions under an authorization of the Company’s board of directors. Shares repurchased by the Company are cancelled and returned to the status of authorized but unissued stock. On May 14, 2008, the Company’s Board of Directors authorized the Company to repurchase an aggregate of 2,000,000 shares of the Company’s outstanding common stock. There were no repurchases of common stock in 2012 and 2011. As of December 31, 2012, 2,000,000 shares remain authorized for repurchase under this authorization.

- Definition

The entire disclosure for shareholders' equity, comprised of portions attributable to the parent entity and noncontrolling interest, if any, including other comprehensive income (as applicable). Including, but not limited to: (1) balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings; (2) accumulated balance for each classification of other comprehensive income and total amount of comprehensive income; (3) amount and nature of changes in separate accounts, including the number of shares authorized and outstanding, number of shares issued upon exercise and conversion, and for other comprehensive income, the adjustments for reclassifications to net income; (4) rights and privileges of each class of stock authorized; (5) basis of treasury stock, if other than cost, and amounts paid and accounting treatment for treasury stock purchased significantly in excess of market; (6) dividends paid or payable per share and in the aggregate for each class of stock for each period presented; (7) dividend restrictions and accumulated preferred dividends in arrears (in aggregate and per share amount); (8) retained earnings appropriations or restrictions, such as dividend restrictions; (9) impact of change in accounting principle, initial adoption of new accounting principle and correction of an error in previously issued financial statements; (10) shares held in trust for Employee Stock Ownership Plan (ESOP); (11) deferred compensation related to issuance of capital stock; (12) note received for issuance of stock; (13) unamortized discount on shares; (14) description, terms, and number of warrants or rights outstanding; (15) shares under subscription and subscription receivables, effective date of new retained earnings after quasi-reorganization and deficit eliminated by quasi-reorganization and, for a period of at least ten years after the effective date, the point in time from which the new retained dates; and (16) retroactive effective of subsequent change in capital structure.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(d),(e))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 310
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-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 4.E)
-URI http://asc.fasb.org/extlink&oid=6228006&loc=d3e74512-122707

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29-31)
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-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 1
-Subparagraph (SX 210.3-04)
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 2
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644

Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Preferred Stock
-URI http://asc.fasb.org/extlink&oid=6521494

Reference 12: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Name Accounting Standards Codification
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-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644

Reference 14: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 43
-Section B
-Paragraph 7, 11A
-Chapter 1
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Principles Board Opinion (APB)
-Number 12
-Paragraph 10
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 16: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 15
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 17: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph d
-Article 4

Reference 18: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30, 31
-Article 5

Reference 19: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section E

Reference 20: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Article 4

Reference 21: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 4
-Section C

Reference 22: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 129
-Paragraph 2, 3, 4, 5, 6, 7, 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 23: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

+ Details

Commitments and Contingencies

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies [Abstract]

COMMITMENTS AND CONTINGENCIES

NOTE 7.

COMMITMENTS AND CONTINGENCIES

The Company leases certain facilities under various operating leases. Most of the lease agreements provide the Company with the option of renewing its lease at the end of the lease term, at the fair rental value. In most cases, management expects that in the normal course of business, facility leases will be renewed or replaced by other leases. Minimum payments under these leases, exclusive of property taxes and insurance, are as follows:


(in thousands)

Year Ended December 31,
2013	$	1,225
2014		740
2015		674
2016		670
2017		670
Thereafter		613

	$	4,592

Rent expense was $3.1 million, $2.4 million and $2.3 million in 2012, 2011 and 2010, respectively.

The Company is involved in various lawsuits and routine claims arising out of the normal course of its business. The Company maintains insurance coverage for its operations and employees with appropriate aggregate, per occurrence and deductible limits as the Company reasonably determines necessary or prudent with current operations and historical experience. The major policies include coverage for property, general liability, auto, directors and officers, health, and workers’ compensation insurances. In the opinion of management, the ultimate amount of liability not covered by insurance, if any, under any pending litigation and claims, individually or in the aggregate, will not have a material adverse effect on the financial position or operating results of the Company.

- Definition

The entire disclosure for commitments and contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
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-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6952336&loc=d3e14435-108349

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.25)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 14
-Paragraph 3
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 5
-Paragraph 9, 10, 11, 12
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Intangible Assets

12 Months Ended

Dec. 31, 2012

Intangible Assets [Abstract]

INTANGIBLE ASSETS

NOTE 8.

INTANGIBLE ASSETS

Intangible assets consist of the following:


(dollar amounts in thousands)	Estimated Useful Life In Years		December 31,
	Estimated Useful Life In Years		2012			2011
Trade Name		Indefinite	$	5,700		$	5,700
Customer Relationships		11		9,100			9,100

				14,800			14,800
Less Accumulated Amortization				(3,313	)		(2,489	)

			$	11,487		$	12,311

Intangible assets with finite useful lives are amortized over their respective useful lives. Based on the carrying values at December 31, 2012 and assuming no subsequent impairment of the underlying assets, the annual amortization is expected to be $0.8 million in 2013 through 2017 and thereafter.

Related Party Transactions

12 Months Ended

Dec. 31, 2012

RELATED PARTY TRANSACTIONS

NOTE 9.

– RELATED PARTY TRANSACTIONS

The Company acquired liquid and solid containment tanks totaling $38.3 million and $30.3 million, during the years ended December 31, 2012 and 2011, respectively from Sabre Manufacturing, LLC, which is controlled by the President of Adler Tanks. In addition, during 2011, the Company leased two operating facilities and received certain support services from companies controlled by the President of Adler Tanks. Payments for these leases and services totaled $0.2 million in 2011. Amounts due to aforementioned related parties at December 31, 2012 and 2011 were $1.0 million and $3.0 million, respectively.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39622-107864

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39678-107864

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(k))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
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-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39691-107864

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Paragraph b
-Article 3A

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph k
-Article 4

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 57
-Paragraph 1-4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Segment Reporting

12 Months Ended

Dec. 31, 2012

Segment Reporting [Abstract]

SEGMENT REPORTING

NOTE 10.

SEGMENT REPORTING

FASB guidelines establish annual and interim reporting standards for an enterprise’s operating segments and related disclosures about its products, services, geographic areas and major customers. In accordance with these guidelines the Company’s four reportable segments are Mobile Modular, TRS-RenTelco, Adler Tanks and Enviroplex. Management focuses on several key measures to evaluate and assess each segment’s performance including rental revenue growth, gross margin, and income before provision for income taxes. As separate corporate entities, Adler Tanks and Enviroplex revenues and expenses are separately maintained from Mobile Modular and TRS-RenTelco. Excluding interest expense, allocations of revenue and expense not directly associated with one of these segments are generally allocated to Mobile Modular, TRS-RenTelco and Adler Tanks, based on their pro-rata share of direct revenues. Interest expense is allocated amongst Mobile Modular, TRS-RenTelco and Adler Tanks based on their pro-rata share of average rental equipment at cost, goodwill, intangible assets, accounts receivable, deferred income and customer security deposits. The Company does not report total assets by business segment. Summarized financial information for the years ended December 31, 2012, 2011 and 2010, for the Company’s reportable segments is shown in the following tables:


Segment Data	Mobile Modular			TRS-RenTelco			Adler Tanks			Enviroplex¹			Consolidated
(dollar amounts in thousands)
Year Ended December 31,
2012
Rental Revenues	$	79,518		$	101,645		$	67,281		$	—		$	248,444
Rental Related Services Revenues		25,775			3,673			17,472			—			46,920
Sales and Other Revenues		14,474			27,855			2,558			23,823			68,710
Total Revenues		119,767			133,173			87,311			23,823			364,074
Depreciation of Rental Equipment		13,942			38,174			11,703			—			63,819
Gross Profit		52,022			62,083			51,157			3,032			168,294
Interest Expense (Income) Allocation		4,547			2,384			2,350			(132	)		9,149
Income (Loss) before Provision for Income Taxes		13,443			33,631			26,706			(913	)		72,867
Rental Equipment Acquisitions		21,042			51,793			55,919			—			128,754
Accounts Receivable, net (period end)		39,066			24,654			24,523			4,213			92,456
Rental Equipment, at cost (period end)		551,101			266,934			254,810			—			1,072,845
Rental Equipment, net book value (period end)		384,813			107,999			226,041			—			718,853
Utilization (period end)²		66.7	%		64.1	%		67.5	%
Average Utilization²		66.4	%		65.8	%		71.5	%


Segment Data (Continued)		Mobile Modular			TRS-RenTelco			Adler Tanks			Enviroplex¹			Consolidated
(dollar amounts in thousands)
Year Ended December 31,
2011
Rental Revenues	$	79,969		$	95,694		$	59,243		$	—		$	234,906
Rental Related Services Revenues		24,063			3,133			12,290			—			39,486
Sales and Other Revenues		20,577			26,488			425			20,788			68,278
Total Revenues		124,609			125,315			71,958			20,788			342,670
Depreciation of Rental Equipment		13,780			38,039			8,368			—			60,187
Gross Profit		55,193			57,069			49,619			4,910			166,791
Interest Expense (Income) Allocation		4,036			2,124			1,659			(213	)		7,606
Income before Provision for Income Taxes		19,026			29,024			31,262			1,746			81,058
Rental Equipment Acquisitions		33,824			55,302			68,628			—			157,754
Accounts Receivable, net (period end)		44,013			24,236			19,226			5,197			92,671
Rental Equipment, at cost (period end)		539,147			258,586			201,456			—			999,189
Rental Equipment, net book value (period end)		383,621			105,565			183,960			—			673,146
Utilization (period end)²		67.3	%		67.1	%		79.8	%
Average Utilization²		67.1	%		66.0	%		86.2	%

2010
Rental Revenues	$	82,648		$	82,540		$	35,427		$	—		$	200,615
Rental Related Services Revenues		22,947			2,240			9,515			—			34,702
Sales and Other Revenues		21,117			22,982			289			11,695			56,083
Total Revenues		126,712			107,762			45,231			11,695			291,400
Depreciation of Rental Equipment		13,734			37,017			5,648			—			56,399
Gross Profit		56,902			43,475			27,685			2,753			130,815
Interest Expense (Income) Allocation		3,513			1,791			1,080			(198	)		6,186
Income (Loss) before Provision for Income Taxes		25,080			19,263			14,444			263			59,050
Rental Equipment Acquisitions		22,948			42,406			52,353			—			117,707
Accounts Receivable, net (period end)		39,041			20,620			14,751			2,076			76,488
Rental Equipment, at cost (period end)		514,548			250,125			133,095			—			897,768
Rental Equipment, net book value (period end) end)		369,195			98,444			123,941			—			591,580
Utilization (period end)²		67.2	%		64.3	%		84.9	%
Average Utilization²		67.7	%		66.0	%		76.0	%

Gross Enviroplex sales revenues were $24,240, $20,884 and $12,321 in 2012, 2011 and 2010, respectively, which includes inter-segment sales to Mobile Modular of $417, $97 and $626, which have been eliminated in consolidation.

Utilization is calculated each month by dividing the cost of rental equipment on rent by the total cost of rental equipment excluding new equipment inventory and accessory equipment. The average utilization for the period is calculated using the average costs of rental equipment.

No single customer accounted for more than 10% of total revenues during 2012, 2011 and 2010. Revenue from foreign country customers accounted for 9%, 8% and 9% of the Company’s revenues for the same periods, respectively.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
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Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 131
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information (Unaudited) [Abstract]

QUARTERLY FINANCIAL INFORMATION (unaudited)

NOTE 11.

QUARTERLY FINANCIAL INFORMATION (unaudited)

Quarterly financial information for each of the two years ended December 31, 2012 is summarized below:


(in thousands, except per share amounts)	2012
	First		Second		Third		Fourth		Year
Operations Data
Rental Revenues	$	59,520	$	60,389	$	63,418	$	65,117	$	248,444
Total Revenues		78,929		83,765		99,430		101,950		364,074
Gross Profit		39,835		40,780		43,640		44,039		168,294
Income from Operations		18,474		19,617		22,792		21,133		82,016
Income Before Provision for Income Taxes		16,301		17,235		20,480		18,851		72,867
Net Income		9,911		10,479		12,451		11,936		44,777
Earnings Per Share:
Basic	$	0.40	$	0.42	$	0.50	$	0.48	$	1.80
Diluted	$	0.39	$	0.42	$	0.50	$	0.47	$	1.78
Dividends Declared Per Share	$	0.235	$	0.235	$	0.235	$	0.235	$	0.940
Shares Used in Per Share Calculations:
Basic		24,639		24,765		24,785		24,847		24,759
Diluted		25,183		25,149		25,106		25,216		25,156
Balance Sheet Data
Rental Equipment, net	$	693,577	$	710,918	$	719,636	$	718,853	$	718,853
Total Assets		934,282		963,649		988,254		972,446		972,446
Notes Payable		292,118		308,000		314,193		302,000		302,000
Shareholders’ Equity		341,853		347,500		355,758		364,738		364,738

	2011
	First		Second		Third		Fourth		Year
Operations Data
Rental Revenues	$	54,026	$	57,118	$	60,964	$	62,798	$	234,906
Total Revenues		72,973		79,530		104,961		85,206		342,670
Gross Profit		35,852		39,359		47,387		44,193		166,791
Income from Operations		17,294		20,714		27,306		23,350		88,664
Income Before Provision for Income Taxes		15,812		18,760		25,255		21,231		81,058
Net Income		9,614		11,406		15,355		13,227		49,602
Earnings Per Share:
Basic	$	0.40	$	0.47	$	0.63	$	0.54	$	2.04
Diluted	$	0.39	$	0.46	$	0.62	$	0.53	$	2.00
Dividends Declared Per Share	$	0.23	$	0.23	$	0.23	$	0.23	$	0.92
Shares Used in Per Share Calculations:
Basic		24,258		24,340		24,362		24,431		24,349
Diluted		24,660		24,742		24,719		24,892		24,760
Balance Sheet Data
Rental Equipment, net	$	608,115	$	632,518	$	655,854	$	673,146	$	673,146
Total Assets		832,032		866,700		895,144		918,929		918,929
Notes Payable		265,771		270,500		289,573		296,500		296,500
Shareholders’ Equity		300,976		309,322		320,410		333,142		333,142

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References + Details

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies [Abstract]

Organization

Organization

Principles of Consolidation

Principles of Consolidation

The consolidated financial statements include the accounts of McGrath RentCorp and its wholly-owned subsidiaries. All intercompany accounts and transactions have been eliminated in consolidation.

Revenue Recognition

Revenue Recognition

Other revenue is recognized when earned and primarily includes interest income on sales-type leases, rental income on facility rentals and certain logistics services.

Sales taxes charged to customers are reported on a net basis and are excluded from revenues and expenses.

Depreciation of Rental Equipment

Depreciation of Rental Equipment

The estimated useful lives and residual values of the Company’s rental equipment used for financial reporting purposes are as follows:


Relocatable modular buildings		18 years, 50% residual value
Relocatable modular accessories		3 to 18 years, no residual value
Portable storage containers		25 years, 62.5% residual value
Electronic test equipment and accessories		1 to 8 years, no residual value
Liquid and solid containment tanks and boxes and accessories		10 to 20 years, no residual value

Costs of Rental Related Services

Costs of Rental Related Services

Impairment of Long-Lived Assets

Impairment of Long-Lived Assets

Other Direct Costs of Rental Operations

Other Direct Costs of Rental Operations

Cost of Sales

Cost of Sales

Cost of sales in the Consolidated Statements of Income includes the carrying value of the equipment sold and all direct costs associated with the sale.

Warranty Reserves

Warranty Reserves

Property, Plant and Equipment

Property, Plant and Equipment

Property, plant and equipment consist of the following:


(dollar amounts in thousands)	Estimated Useful Life In Years		December 31,
(dollar amounts in thousands)	Estimated Useful Life In Years		2012			2011
Land		Indefinite	$	35,371		$	30,466
Land Improvements		20 – 50		38,708			38,470
Buildings		30		20,522			18,853
Furniture, Office and Computer Equipment		3 – 10		26,496			24,942
Machinery and Service Equipment		5 – 20		16,186			13,000

				137,283			125,731
Less Accumulated Depreciation				(39,301	)		(31,712	)

				97,982			94,019
Construction In Progress				3,049			683

				$101,031			$94,702

Advertising Costs

Advertising Costs

Advertising costs are expensed as incurred. Total advertising expenses were $2.5 million, $2.1 million and $1.7 million for the years ended December 31, 2012, 2011 and 2010.

Income Taxes

Income Taxes

Goodwill and Intangible Assets

Goodwill and Intangible Assets

Earnings Per Share

Earnings Per Share


(in thousands)	Year Ended December 31,
	2012		2011		2010
Weighted-average common stock for calculating basic earnings per share		24,759		24,349		23,944
Effect of potentially dilutive securities from equity-based compensation		397		411		345

Weighted-average common stock for calculating diluted earnings per share		25,156		24,760		24,289

The following securities were not included in the computation of diluted earnings per share as their effect would have been anti-dilutive:


(in thousands)	Year Ended December 31,
	2012		2011		2010
Options to purchase common stock		1,049		1,131		1,066

Accounts Receivable and Concentration of Credit Risk

Accounts Receivable and Concentration of Credit Risk


(in thousands)	2012			2011
Beginning Balance, January 1	$	1,500		$	1,700
Provision for doubtful accounts		4,263			1,755
Write-offs, net of recoveries		(2,763	)		(1,955	)

Ending Balance, December 31	$	3,000		$	1,500

Fair Value of Financial Instruments

Fair Value of Financial Instruments

Foreign Currency Transactions

Foreign Currency Transactions

Stock-Based Compensation

Stock-Based Compensation

The fair value of each option granted was estimated on the date of grant using the Black-Scholes option-pricing model using the following weighted average assumptions:


	Year Ended December 31,
	2012			2011			2010
Expected term (in years)		5.0			5.0			5.2
Expected volatility		52.1	%		51.6	%		51.2	%
Expected dividend yields		3.2	%		3.4	%		3.8	%
Risk-free interest rates		0.8	%		2.0	%		2.2	%

The weighted average grant date fair value per share was $10.28, $9.68 and $8.12 during the years ended December 31, 2012, 2011 and 2010, respectively.

Use of Estimates

Use of Estimates

Comprehensive Income

Comprehensive Income

Comprehensive income is equivalent to net income for all periods presented.

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2012

Summary of Significant Accounting Policies [Abstract]

Property plant and equipment


(dollar amounts in thousands)	Estimated Useful Life In Years		December 31,
(dollar amounts in thousands)	Estimated Useful Life In Years		2012			2011
Land		Indefinite	$	35,371		$	30,466
Land Improvements		20 – 50		38,708			38,470
Buildings		30		20,522			18,853
Furniture, Office and Computer Equipment		3 – 10		26,496			24,942
Machinery and Service Equipment		5 – 20		16,186			13,000

				137,283			125,731
Less Accumulated Depreciation				(39,301	)		(31,712	)

				97,982			94,019
Construction In Progress				3,049			683

				$101,031			$94,702

Weighted-average number of shares of common stock used to calculate basic and diluted earnings per share


(in thousands)	Year Ended December 31,
	2012		2011		2010
Weighted-average common stock for calculating basic earnings per share		24,759		24,349		23,944
Effect of potentially dilutive securities from equity-based compensation		397		411		345

Weighted-average common stock for calculating diluted earnings per share		25,156		24,760		24,289

Securities not included in the computation of diluted earnings per share


(in thousands)	Year Ended December 31,
	2012		2011		2010
Options to purchase common stock		1,049		1,131		1,066

Summary of allowance for doubtful accounts activity


(in thousands)	2012			2011
Beginning Balance, January 1	$	1,500		$	1,700
Provision for doubtful accounts		4,263			1,755
Write-offs, net of recoveries		(2,763	)		(1,955	)

Ending Balance, December 31	$	3,000		$	1,500

Summary of fair value of option granted


	Year Ended December 31,
	2012			2011			2010
Expected term (in years)		5.0			5.0			5.2
Expected volatility		52.1	%		51.6	%		51.2	%
Expected dividend yields		3.2	%		3.4	%		3.8	%
Risk-free interest rates		0.8	%		2.0	%		2.2	%

Financed Lease Receivables (Tables)

12 Months Ended

Dec. 31, 2012

Financed Lease Receivables [Abstract]

Minimum lease payments receivable and net investment included in accounts receivable for leases


(in thousands)	December 31,
	2012			2011
Gross minimum lease payments receivable	$	2,326		$	2,612
Less—unearned interest		(201	)		(226	)

Net investment in sales type lease receivables	$	2,125		$	2,386

Future minimum lease payments under non-cancelable sales-type leases


(in thousands)
Year Ended December 31,
2013	$	1,905
2014		416
2015		5
2017		—

Total minimum future lease payments		$2,326

Notes Payable (Table)

12 Months Ended

Dec. 31, 2012

Notes Payable [Abstract]

Components of notes payable


(in thousands)	December 31,
	2012		2011
Unsecured Revolving Lines of Credit	$	202,000	$	196,500
4.03% Senior Notes due in 2018		100,000		100,000

	$	302,000	$	296,500

Unsecured revolving lines of credit


(in thousands)
Year Ended December 31,
2013	$	—
2014		20,000
2015		20,000
2016		20,000
2017		222,000
Thereafter		20,000

		$302,000

Information relates to the lines of credit


(dollar amounts in thousands)	Year Ended December 31,
	2012			2011
Maximum amount outstanding	$	220,799		$	262,461
Average amount outstanding	$	206,514		$	206,227
Weighted average interest rate, during the period		2.51	%		2.22	%
Weighted average interest rate, end of period		1.71	%		1.79	%
Prime interest rate, end of period		3.25	%		3.25	%

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22)
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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-Name Accounting Standards Codification
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Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Topic 835
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 10: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 11: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 22
-Article 5

+ Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes [Abstract]

Provision for income taxes


(in thousands)	Year Ended December 31,
	2012		2011		2010
Current	$	4,886	$	5,741	$	8,754
Deferred		23,204		25,715		13,817

	$	28,090	$	31,456	$	22,571

Reconciliation of federal statutory tax rate to the Company's effective tax rate


	Year Ended December 31,
	2012			2011			2010
Federal statutory rate		35.0	%		35.0	%		35.0	%
State taxes, net of federal benefit		4.2			4.1			4.2
Other		(0.6	)		(0.3	)		(1.0	)

		38.6	%		38.8	%		38.2	%

Deferred income taxes related to the temporary differences between the tax bases of assets and liabilities


(in thousands)	December 31,
	2012		2011
Deferred Tax Liabilities:
Accelerated Depreciation	$	248,515	$	238,912
Prepaid Costs Currently Deductible		4,597		4,178
Other		2,451		2,414

Total Deferred Tax Liabilities		255,563		245,504

Deferred Tax Assets:
Accrued Costs Not Yet Deductible		6,138		6,017
Allowance for Doubtful Accounts		1,163		582
Net Operating Loss Carry Forwards and Credits		12,103		25,495
Deferred Revenues		1,300		243
Stock Based Compensation		8,295		7,801

Total Deferred Tax Assets		28,999		40,138

Deferred Income Taxes, net	$	226,564	$	205,366

Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Benefit Plans [Abstract]

Schedule of option activity and options exercisable including the weighted average exercise price


	Year Ended December 31,
	2012					2011					2010
	Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price		Shares			Weighted Average Exercise Price
Options outstanding at January 1,		3,086,019		$	23.52		3,344,450		$	22.80		3,504,319		$	22.09
Options granted during the year		128,500			29.63		160,600			27.41		282,000			23.72
Options exercised during the year		(327,498	)		17.95		(309,447	)		17.19		(422,069	)		17.78
Options terminated during the year		(48,468	)		27.63		(109,584	)		25.01		(19,800	)		22.03

Options outstanding at December 31,		2,838,553			24.37		3,086,019			23.52		3,344,450			22.80

Options exercisable at December 31,		2,322,258			24.64		2,306,159			24.43		2,148,100			23.91

Options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price


	Options Outstanding						Options Exercisable
Exercise Price	Number Outstanding at December 31, 2012		Weighted Average Remaining Contractual Life (Years)		Weighted Average Exercise Price		Number Exercisable at December 31, 2012		Weighted Average Exercise Price
$10–15		20,000		0.25	$	11.74		20,000	$	11.74
15–20		420,608		2.86		15.65		265,608		15.67
20–25		1,161,150		2.57		21.73		1,008,275		21.55
25–30		688,295		3.61		28.93		575,375		29.81
30–35		548,500		2.03		31.39		453,000		31.39

10–35		2,838,553		2.74		24.37		2,322,258		24.64

Summary of activity of the Company's restricted stock units


	Year Ended December 31,
	2012					2011
	Number of Shares			Weighted Average Grant Date Fair Value		Number of Shares			Weighted Average Grant Date Fair Value
Restricted stock unvested as of January 1,		187,810		$	26.33		110,200		$	23.61
Restricted stock granted during the year		109,200			31.37		125,800			27.99
Restricted stock vested during the year		(34,190	)		27.85		(39,105	)		23.91
Restricted stock forfeited during the year		—			—		(9,085	)		25.36

Restricted stock unvested as of December 31,		262,820			28.22		187,810			26.33

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2012

Commitments and Contingencies [Abstract]

Minimum payments under leases exclusive of property taxes and insurance


(in thousands)

Year Ended December 31,
2013	$	1,225
2014		740
2015		674
2016		670
2017		670
Thereafter		613

	$	4,592

Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2012

Intangible Assets [Abstract]

Summary of intangible assets


(dollar amounts in thousands)	Estimated Useful Life In Years		December 31,
	Estimated Useful Life In Years		2012			2011
Trade Name		Indefinite	$	5,700		$	5,700
Customer Relationships		11		9,100			9,100

				14,800			14,800
Less Accumulated Amortization				(3,313	)		(2,489	)

			$	11,487		$	12,311

Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2012

Segment Reporting [Abstract]

Summarized financial information for the Company's reportable segments


Segment Data	Mobile Modular			TRS-RenTelco			Adler Tanks			Enviroplex¹			Consolidated
(dollar amounts in thousands)
Year Ended December 31,
2012
Rental Revenues	$	79,518		$	101,645		$	67,281		$	—		$	248,444
Rental Related Services Revenues		25,775			3,673			17,472			—			46,920
Sales and Other Revenues		14,474			27,855			2,558			23,823			68,710
Total Revenues		119,767			133,173			87,311			23,823			364,074
Depreciation of Rental Equipment		13,942			38,174			11,703			—			63,819
Gross Profit		52,022			62,083			51,157			3,032			168,294
Interest Expense (Income) Allocation		4,547			2,384			2,350			(132	)		9,149
Income (Loss) before Provision for Income Taxes		13,443			33,631			26,706			(913	)		72,867
Rental Equipment Acquisitions		21,042			51,793			55,919			—			128,754
Accounts Receivable, net (period end)		39,066			24,654			24,523			4,213			92,456
Rental Equipment, at cost (period end)		551,101			266,934			254,810			—			1,072,845
Rental Equipment, net book value (period end)		384,813			107,999			226,041			—			718,853
Utilization (period end)²		66.7	%		64.1	%		67.5	%
Average Utilization²		66.4	%		65.8	%		71.5	%


Segment Data (Continued)		Mobile Modular			TRS-RenTelco			Adler Tanks			Enviroplex¹			Consolidated
(dollar amounts in thousands)
Year Ended December 31,
2011
Rental Revenues	$	79,969		$	95,694		$	59,243		$	—		$	234,906
Rental Related Services Revenues		24,063			3,133			12,290			—			39,486
Sales and Other Revenues		20,577			26,488			425			20,788			68,278
Total Revenues		124,609			125,315			71,958			20,788			342,670
Depreciation of Rental Equipment		13,780			38,039			8,368			—			60,187
Gross Profit		55,193			57,069			49,619			4,910			166,791
Interest Expense (Income) Allocation		4,036			2,124			1,659			(213	)		7,606
Income before Provision for Income Taxes		19,026			29,024			31,262			1,746			81,058
Rental Equipment Acquisitions		33,824			55,302			68,628			—			157,754
Accounts Receivable, net (period end)		44,013			24,236			19,226			5,197			92,671
Rental Equipment, at cost (period end)		539,147			258,586			201,456			—			999,189
Rental Equipment, net book value (period end)		383,621			105,565			183,960			—			673,146
Utilization (period end)²		67.3	%		67.1	%		79.8	%
Average Utilization²		67.1	%		66.0	%		86.2	%

2010
Rental Revenues	$	82,648		$	82,540		$	35,427		$	—		$	200,615
Rental Related Services Revenues		22,947			2,240			9,515			—			34,702
Sales and Other Revenues		21,117			22,982			289			11,695			56,083
Total Revenues		126,712			107,762			45,231			11,695			291,400
Depreciation of Rental Equipment		13,734			37,017			5,648			—			56,399
Gross Profit		56,902			43,475			27,685			2,753			130,815
Interest Expense (Income) Allocation		3,513			1,791			1,080			(198	)		6,186
Income (Loss) before Provision for Income Taxes		25,080			19,263			14,444			263			59,050
Rental Equipment Acquisitions		22,948			42,406			52,353			—			117,707
Accounts Receivable, net (period end)		39,041			20,620			14,751			2,076			76,488
Rental Equipment, at cost (period end)		514,548			250,125			133,095			—			897,768
Rental Equipment, net book value (period end) end)		369,195			98,444			123,941			—			591,580
Utilization (period end)²		67.2	%		64.3	%		84.9	%
Average Utilization²		67.7	%		66.0	%		76.0	%

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References + Details

Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2012

Quarterly Financial Information (Unaudited) [Abstract]

Quarterly financial information


(in thousands, except per share amounts)	2012
	First		Second		Third		Fourth		Year
Operations Data
Rental Revenues	$	59,520	$	60,389	$	63,418	$	65,117	$	248,444
Total Revenues		78,929		83,765		99,430		101,950		364,074
Gross Profit		39,835		40,780		43,640		44,039		168,294
Income from Operations		18,474		19,617		22,792		21,133		82,016
Income Before Provision for Income Taxes		16,301		17,235		20,480		18,851		72,867
Net Income		9,911		10,479		12,451		11,936		44,777
Earnings Per Share:
Basic	$	0.40	$	0.42	$	0.50	$	0.48	$	1.80
Diluted	$	0.39	$	0.42	$	0.50	$	0.47	$	1.78
Dividends Declared Per Share	$	0.235	$	0.235	$	0.235	$	0.235	$	0.940
Shares Used in Per Share Calculations:
Basic		24,639		24,765		24,785		24,847		24,759
Diluted		25,183		25,149		25,106		25,216		25,156
Balance Sheet Data
Rental Equipment, net	$	693,577	$	710,918	$	719,636	$	718,853	$	718,853
Total Assets		934,282		963,649		988,254		972,446		972,446
Notes Payable		292,118		308,000		314,193		302,000		302,000
Shareholders’ Equity		341,853		347,500		355,758		364,738		364,738

	2011
	First		Second		Third		Fourth		Year
Operations Data
Rental Revenues	$	54,026	$	57,118	$	60,964	$	62,798	$	234,906
Total Revenues		72,973		79,530		104,961		85,206		342,670
Gross Profit		35,852		39,359		47,387		44,193		166,791
Income from Operations		17,294		20,714		27,306		23,350		88,664
Income Before Provision for Income Taxes		15,812		18,760		25,255		21,231		81,058
Net Income		9,614		11,406		15,355		13,227		49,602
Earnings Per Share:
Basic	$	0.40	$	0.47	$	0.63	$	0.54	$	2.04
Diluted	$	0.39	$	0.46	$	0.62	$	0.53	$	2.00
Dividends Declared Per Share	$	0.23	$	0.23	$	0.23	$	0.23	$	0.92
Shares Used in Per Share Calculations:
Basic		24,258		24,340		24,362		24,431		24,349
Diluted		24,660		24,742		24,719		24,892		24,760
Balance Sheet Data
Rental Equipment, net	$	608,115	$	632,518	$	655,854	$	673,146	$	673,146
Total Assets		832,032		866,700		895,144		918,929		918,929
Notes Payable		265,771		270,500		289,573		296,500		296,500
Shareholders’ Equity		300,976		309,322		320,410		333,142		333,142

Summary of Significant Accounting Policies (Details)	12 Months Ended
Summary of Significant Accounting Policies (Details)	Dec. 31, 2012
Relocatable modular buildings [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	18 years
Percentage residual value property subject to or available for operating lease	50.00%
Relocatable modular accessories [Member]
Estimated useful lives and residual values of the Company's rental equipment
Percentage residual value property subject to or available for operating lease	0.00%
Relocatable modular accessories [Member] \| Minimum [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	3 years
Relocatable modular accessories [Member] \| Maximum [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	18 years
Portable storage containers [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	25 years
Percentage residual value property subject to or available for operating lease	62.50%
Electronic test equipment and accessories [Member]
Estimated useful lives and residual values of the Company's rental equipment
Percentage residual value property subject to or available for operating lease	0.00%
Electronic test equipment and accessories [Member] \| Minimum [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	1 year
Electronic test equipment and accessories [Member] \| Maximum [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	8 years
Liquid and solid containment tanks and boxes and accessories [Member]
Estimated useful lives and residual values of the Company's rental equipment
Percentage residual value property subject to or available for operating lease	0.00%
Liquid and solid containment tanks and boxes and accessories [Member] \| Minimum [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	10 years
Liquid and solid containment tanks and boxes and accessories [Member] \| Maximum [Member]
Estimated useful lives and residual values of the Company's rental equipment
Property subject to or available for operating lease useful life	20 years

Summary of Significant Accounting Policies (Details 1) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Property plant and equipment
Property, plant and equipment, gross	$ 137,283	$ 125,731
Less Accumulated Depreciation	(39,301)	(31,712)
Property plant and equipment net excluding capitalized cost	97,982	94,019
Construction In Progress	3,049	683
Property, Plant and Equipment, net	$ 101,031	94,702
Land [Member]
Property plant and equipment
Estimated Useful Life	Indefinite
Property, plant and equipment, gross	$ 35,371	30,466
Land Improvements [Member]
Property plant and equipment
Property, plant and equipment, gross	$ 38,708	38,470
Land Improvements [Member] \| Maximum [Member]
Property plant and equipment
Estimated Useful Life	50 years
Land Improvements [Member] \| Minimum [Member]
Property plant and equipment
Estimated Useful Life	20 years
Buildings [Member]
Property plant and equipment
Estimated Useful Life	30 years
Property, plant and equipment, gross	$ 20,522	18,853
Furniture, Office and Computer Equipment [Member]
Property plant and equipment
Property, plant and equipment, gross	$ 26,496	24,942
Furniture, Office and Computer Equipment [Member] \| Maximum [Member]
Property plant and equipment
Estimated Useful Life	10 years
Furniture, Office and Computer Equipment [Member] \| Minimum [Member]
Property plant and equipment
Estimated Useful Life	3 years
Machinery and Service Equipment [Member]
Property plant and equipment
Property, plant and equipment, gross	$ 16,186	$ 13,000
Machinery and Service Equipment [Member] \| Maximum [Member]
Property plant and equipment
Estimated Useful Life	20 years
Machinery and Service Equipment [Member] \| Minimum [Member]
Property plant and equipment
Estimated Useful Life	5 years

Summary of Significant Accounting Policies (Details 2) - shares shares in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Weighted-average number of shares of common stock used to calculate basic and diluted earnings per share
Weighted-average common stock for calculating basic earnings per share	24,847	24,785	24,765	24,639	24,431	24,362	24,340	24,258	24,759	24,349	23,944
Effect of potentially dilutive securities from equity-based compensation									397	411	345
Weighted-average common stock for calculating diluted earnings per share	25,216	25,106	25,149	25,183	24,892	24,719	24,742	24,660	25,156	24,760	24,289

- Definition

The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

+ References + Details

- Definition

Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 45
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Weighted-Average Number of Common Shares Outstanding
-URI http://asc.fasb.org/extlink&oid=6528421

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 8
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Summary of Significant Accounting Policies (Details 3) - shares shares in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Securities not included in the computation of diluted earnings per share
Options to purchase common stock	1,049	1,131	1,066

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Antidilution
-URI http://asc.fasb.org/extlink&oid=6505113

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Diluted Earnings Per Share
-URI http://asc.fasb.org/extlink&oid=6510752

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Contingent Stock Agreement
-URI http://asc.fasb.org/extlink&oid=6508534

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 40
-Subparagraph c
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 13, 14
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Emerging Issues Task Force (EITF)
-Number 07-4
-Paragraph 4
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
-Paragraph 171
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Summary of Significant Accounting Policies (Details 4) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of allowance for doubtful accounts activity
Allowance for doubtful accounts, Beginning Balance	$ 1,500	$ 1,700
Provision for doubtful accounts	4,263	1,755	$ 1,494
Write-offs, net of recoveries	(2,763)	(1,955)
Allowance for doubtful accounts, Ending Balance	$ 3,000	$ 1,500	$ 1,700

Summary of Significant Accounting Policies (Details 5)	12 Months Ended
Summary of Significant Accounting Policies (Details 5)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summary of fair value of option granted
Expected term (in years)	5 years	5 years	5 years 2 months 12 days
Expected volatility	52.10%	51.60%	51.20%
Expected dividend yields	3.20%	3.40%	3.80%
Risk-free interest rates	0.80%	2.00%	2.20%

Summary of Significant Accounting Policies (Details Textual) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2012 USD ($) Segment $ / shares	Dec. 31, 2011 USD ($) $ / shares	Dec. 31, 2010 USD ($) $ / shares
Summary of Significant Accounting Policies (Textual) [Abstract]
Number of business segments \| Segment	4
Impairments of long-lived assets	$ 0	$ 0	$ 0
Period for warranties for rental equipment	90 days
Period for warranties for equipment manufactured	1 year
Total advertising expenses	$ 2,500	2,100	1,700
Goodwill and intangible assets	$ 37,200
Intangible assets related to customer relationships amortized year	11 years
Goodwill and trade name intangible assets	$ 33,400	33,400
Unbilled receivables related to end-of-lease services	$ 17,400	17,200
Period for Credit	30 days
Estimated fair value notes payable	$ 106,000	107,000
Recorded fair value of notes payable	100,000	100,000
Non cash share based compensation	3,840	5,221	4,227
Tax benefit relate to aforementioned stock based compensation expenses	1,500	2,000	1,600
Share - based compensation	$ 2,400	$ 3,200	$ 2,600
Diluted share \| $ / shares	$ 0.09	$ 0.13	$ 0.11
Weighted average grant date fair value \| $ / shares	$ 10.28	$ 9.68	$ 8.12

Financed Lease Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Minimum lease payments receivable and net investment included in accounts receivable for leases
Gross minimum lease payments receivable	$ 2,326	$ 2,612
Less - unearned interest	(201)	(226)
Net investment in sales type lease receivables	$ 2,125	$ 2,386

Financed Lease Receivables (Details 1) $ in Thousands	Dec. 31, 2012 USD ($)
Future minimum lease payments under non-cancelable sales-type leases
2013	$ 1,905
2014	416
2015	5
2017
Total minimum future lease payments	$ 2,326

Notes Payable (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011
Components of Notes Payable
Notes Payable	$ 302,000	$ 314,193	$ 308,000	$ 292,118	$ 296,500	$ 289,573	$ 270,500	$ 265,771
Unsecured Revolving Lines of Credit [Member]
Components of Notes Payable
Notes Payable	202,000				196,500
4.03% Senior Notes due in 2018 [Member]
Components of Notes Payable
Notes Payable	$ 100,000				$ 100,000

Notes Payable (Details 1) $ in Thousands	Dec. 31, 2012 USD ($)
Unsecured Revolving Lines of Credit
2013
2014	20,000
2015	20,000
2016	20,000
2017	222,000
Thereafter	20,000
Long-term Debt	$ 302,000

Notes Payable (Details 2) - USD ($) $ in Thousands	12 Months Ended
Notes Payable (Details 2) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Information relates to the lines of credit
Maximum amount outstanding	$ 220,799	$ 262,461
Average amount outstanding	$ 206,514	$ 206,227
Weighted average interest rate, during the period	2.51%	2.22%
Weighted average interest rate, end of period	1.71%	1.79%
Prime interest rate, end of period	3.25%	3.25%

Notes Payable (Details Textual)	1 Months Ended	12 Months Ended
Notes Payable (Details Textual)	Apr. 30, 2011	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)	Apr. 21, 2011 USD ($)
Notes Payable (Textual) [Abstract]
Tangible Net Worth sum				$ 229,000,000
Senior Notes One [Member]
Notes Payable (Textual) [Abstract]
Line of credit facility covenants tangible net worth description		Permit Tangible Net Worth, calculated as of the last day of each fiscal quarter, to be less than the sum of (i) $229.0 million, plus (ii) 25% of net income for such fiscal quarter subsequent to December 31, 2010, plus (iii) 90% of the net cash proceeds from the issuance of the Company’s capital stock after December 31, 2010.
Tangible Net Worth sum		$ 262,600,000
Consolidated Net Income				0.25
Net Cash Proceeds from the issuance of Capital Stock				0.90
Actual tangible net worth		325,600,000
Aggregate principal amount					$ 100,000,000
Interest Rate					4.03%
Maturity period	Apr. 21, 2018
Maturity period of interest payment due	Apr. 21, 2014
Aggregate principal amount mature	12 years
Average life	10 years
Unsecured revolving credit facility before amendment [Member]
Notes Payable (Textual) [Abstract]
Credit facility, maximum		$ 350,000,000
Unsecured revolving credit facility after amended [Member]
Notes Payable (Textual) [Abstract]
Revolving credit facility capacity Period after amendment		5 years
Revolving credit facility before amended		Jun. 15, 2017
Revolving Enhanced Borrowing		$ 450,000,000
Additional capacity		30,000,000
Credit facility, maximum		$ 420,000,000
Line of credit facility covenants tangible net worth description		Permit Tangible Net Worth as of the end of any fiscal quarter of the Company to be less than the sum of (i) $246,103,400 plus (ii) 25% of the Company’s Consolidated Net Income (as defined in the Amended Credit Facility) (but only if a positive number) for each fiscal quarter ended subsequent to December 31, 2011 plus (iii) 90% of the net cash proceeds from the issuance of the Company’s capital stock after December 31, 2011.
Tangible Net Worth sum		$ 262,600,000	$ 246,103,400
Consolidated Net Income			0.25
Net Cash Proceeds from the issuance of Capital Stock			0.90
Actual tangible net worth		325,600,000
Unsecured revolving credit facility after amended [Member] \| Sweep service facility [Member]
Notes Payable (Textual) [Abstract]
Revolving Enhanced Borrowing		430,000,000
Credit facility, maximum		228,000,000
Amount outstanding		$ 202,000,000
Letters of credit [Member]
Notes Payable (Textual) [Abstract]
Revolving credit facility before amended		Jun. 15, 2017
Unsecured revolving credit facility		$ 25,000,000
Credit facility, current		5,000,000
Credit facility, maximum		10,000,000
Swingline loans [Member]
Notes Payable (Textual) [Abstract]
Unsecured revolving credit facility		$ 10,000,000
Maximum [Member] \| Senior Notes One [Member]
Notes Payable (Textual) [Abstract]
Consolidated Fixed Charge Coverage Ratio		2.50
Line of Credit Facility Covenants Aggregate Fixed Charge Coverage Ratio, actual		1.00
Consolidated Leverage Ratio		2.75
Consolidated Leverage Ratio, actual		1.00
Maximum [Member] \| Unsecured revolving credit facility after amended [Member]
Notes Payable (Textual) [Abstract]
Consolidated Fixed Charge Coverage Ratio		2.50
Line of Credit Facility Covenants Aggregate Fixed Charge Coverage Ratio, actual		1.00
Consolidated Leverage Ratio		2.75
Consolidated Leverage Ratio, actual		1.00
Minimum [Member] \| Senior Notes One [Member]
Notes Payable (Textual) [Abstract]
Consolidated Fixed Charge Coverage Ratio		1.00
Line of Credit Facility Covenants Aggregate Fixed Charge Coverage Ratio, actual		4.04
Consolidated Leverage Ratio		1.00
Consolidated Leverage Ratio, actual		1.91
Minimum [Member] \| Unsecured revolving credit facility after amended [Member]
Notes Payable (Textual) [Abstract]
Consolidated Fixed Charge Coverage Ratio		1.00
Line of Credit Facility Covenants Aggregate Fixed Charge Coverage Ratio, actual		4.04
Consolidated Leverage Ratio		1.00
Consolidated Leverage Ratio, actual		1.91

Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Provision for income taxes
Current	$ 4,886	$ 5,741	$ 8,754
Deferred	23,204	25,715	13,817
Provision for income taxes	$ 28,090	$ 31,456	$ 22,571

- Definition

The component of income tax expense for the period representing amounts of income taxes paid or payable (or refundable) for the period for all income tax obligations as determined by applying the provisions of relevant enacted tax laws to relevant amounts of taxable Income or Loss from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Current Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6509736

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-Subparagraph a
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The component of income tax expense for the period representing the increase (decrease) in the entity's deferred tax assets and liabilities pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Deferred Tax Expense (or Benefit)
-URI http://asc.fasb.org/extlink&oid=6510177

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-URI http://asc.fasb.org/extlink&oid=6889476&loc=d3e330036-122817

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 289
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45
-Subparagraph b
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 6
-Section I
-Subsection 7

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 95
-Paragraph 28
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

- Definition

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to pretax Income or Loss from continuing operations; income tax expense or benefit may include interest and penalties on tax uncertainties based on the entity's accounting policy.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (a),(b)
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 25
-URI http://asc.fasb.org/extlink&oid=21917399&loc=d3e32247-109318

Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h))
-URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e23780-122690

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32672-109319

Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 109
-Paragraph 45, 46
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 08
-Paragraph h
-Article 4

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name FASB Interpretation (FIN)
-Number 48
-Paragraph 15, 16, 19
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Income Taxes (Details 1)	12 Months Ended
Income Taxes (Details 1)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Reconciliation of federal statutory tax rate to the Company's effective tax rate
Federal statutory rate	35.00%	35.00%	35.00%
State taxes, net of federal benefit	4.20%	4.10%	4.20%
Other	(0.60%)	(0.30%)	(1.00%)
Effective Income Tax Rate	38.60%	38.80%	38.20%

Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2012	Dec. 31, 2011
Deferred Tax Liabilities:
Accelerated Depreciation	$ 248,515	$ 238,912
Prepaid Costs Currently Deductible	4,597	4,178
Other	2,451	2,414
Total Deferred Tax Liabilities	255,563	245,504
Deferred Tax Assets:
Accrued Costs Not Yet Deductible	6,138	6,017
Allowance for Doubtful Accounts	1,163	582
Net Operating Loss Carry Forwards and Credits	12,103	25,495
Deferred Revenues	1,300	243
Stock Based Compensation	8,295	7,801
Total Deferred Tax Assets	28,999	40,138
Deferred Income Taxes, net	$ 226,564	$ 205,366

Income Taxes (Details Textual) - USD ($) $ in Millions	12 Months Ended
Income Taxes (Details Textual) - USD ($) $ in Millions	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Taxes (Textual) [Abstract]
Excess tax benefit obtained by the company	$ 1.0	$ 1.0	$ 1.0
Company's federal net operating losses for tax return purposes	$ 12.3
Federal net operating losses carry forwards expiry date	Begin to expire in 2031
Likelihood percentage of being realized upon ultimate settlement with the relevant tax authority	50.00%
Unrecognized tax benefits	$ 0.0	0.0
Changes in unrecognized benefits	0.0	$ 0.0	$ 0.0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
State and foreign tax credit carry forwards	$ 6.8
State and foreign tax credit carry forwards expiry date	Begin to expire in 2020

Benefit Plans (Details) - $ / shares	12 Months Ended
Benefit Plans (Details) - $ / shares	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Schedule of option activity and options exercisable including the weighted average exercise price
Options outstanding, Beginning balance	3,086,019	3,344,450	3,504,319
Options granted during the year	128,500	160,600	282,000
Options exercised during the year	(327,498)	(309,447)	(422,069)
Options terminated during the year	(48,468)	(109,584)	(19,800)
Options outstanding, Ending balance	2,838,553	3,086,019	3,344,450
Options exercisable at the Ending Period	2,322,258	2,306,159	2,148,100
Weighted Average Exercise Price, Beginning balance	$ 23.52	$ 22.80	$ 22.09
Weighted Average Exercise Price, Granted	29.63	27.41	23.72
Weighted Average Exercise Price, Exercised	17.95	17.19	17.78
Weighted Average Exercise Price, Terminated	27.63	25.01	22.03
Weighted Average Exercise Price, Ending balance	24.37	23.52	22.80
Weighted Average Exercise Price, Exercisable, Ending balance	$ 24.64	$ 24.43	$ 23.91

Benefit Plans (Details 1)	12 Months Ended
Benefit Plans (Details 1)	Dec. 31, 2012 $ / shares shares
Range One [Member]
Options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price
Exercise price lower range limit	$ 10
Exercise price upper range limit	$ 15
Number Outstanding \| shares	20,000
Weighted Average Remaining Contractual Life (Years)	3 months
Weighted Average Exercise Price	$ 11.74
Number Exercisable \| shares	20,000
Weighted Average Exercise Price	$ 11.74
Range Two [Member]
Options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price
Exercise price lower range limit	15
Exercise price upper range limit	$ 20
Number Outstanding \| shares	420,608
Weighted Average Remaining Contractual Life (Years)	2 years 10 months 10 days
Weighted Average Exercise Price	$ 15.65
Number Exercisable \| shares	265,608
Weighted Average Exercise Price	$ 15.67
Range Three [Member]
Options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price
Exercise price lower range limit	20
Exercise price upper range limit	$ 25
Number Outstanding \| shares	1,161,150
Weighted Average Remaining Contractual Life (Years)	2 years 6 months 26 days
Weighted Average Exercise Price	$ 21.73
Number Exercisable \| shares	1,008,275
Weighted Average Exercise Price	$ 21.55
Range Four [Member]
Options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price
Exercise price lower range limit	25
Exercise price upper range limit	$ 30
Number Outstanding \| shares	688,295
Weighted Average Remaining Contractual Life (Years)	3 years 7 months 10 days
Weighted Average Exercise Price	$ 28.93
Number Exercisable \| shares	575,375
Weighted Average Exercise Price	$ 29.81
Range Five [Member]
Options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price
Exercise price lower range limit	30
Exercise price upper range limit	$ 35
Number Outstanding \| shares	548,500
Weighted Average Remaining Contractual Life (Years)	2 years 11 days
Weighted Average Exercise Price	$ 31.39
Number Exercisable \| shares	453,000
Weighted Average Exercise Price	$ 31.39
Range Six [Member]
Options outstanding and options exercisable by exercise price with the weighted average remaining contractual life for the options outstanding and the weighted average exercise price
Exercise price lower range limit	10
Exercise price upper range limit	$ 35
Number Outstanding \| shares	2,838,553
Weighted Average Remaining Contractual Life (Years)	2 years 8 months 27 days
Weighted Average Exercise Price	$ 24.37
Number Exercisable \| shares	2,322,258
Weighted Average Exercise Price	$ 24.64

Benefit Plans (Details 2) - Restricted Stock Units [Member] - $ / shares	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Summary of activity of the Company's restricted stock units
Restricted stock unvested, beginning balance	187,810	110,200
Restricted stock unvested, Number of shares, Granted	109,200	125,800
Restricted stock unvested, Number of shares, Vested	(34,190)	(39,105)
Restricted stock unvested, Number of shares, Forfeited		(9,085)
Restricted stock unvested, Restricted stock, unvested, ending balance	262,820	187,810
Weighted Average Grant Date Fair Value, Restricted stock unvested, beginning balance	$ 26.33	$ 23.61
Weighted Average Grant Date Fair Value, Restricted stock unvested, Granted	31.37	27.99
Weighted Average Grant Date Fair Value, Restricted stock unvested, Vested	27.85	23.91
Weighted Average Grant Date Fair Value, Restricted stock unvested, Forfeited		25.36
Weighted Average Grant Date Fair Value, Restricted stock unvested, ending balance	$ 28.22	$ 26.33

Benefit Plans (Details Textual) - USD ($)	12 Months Ended
Benefit Plans (Details Textual) - USD ($)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Jun. 06, 2007
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock option plans remain outstanding	2,838,553	3,086,019	3,344,450	3,504,319
Completion of the minimum of Period of employee stock ownership plan	12 months
Tax benefit from dividends	$ 100,000
Benefit Plans (Textual) [Abstract]
Contribution to retirement plan	0	$ 1,100,000	$ 0
Enviroplex contribution to retirement plan	0	35,000	0
Employee stock ownership plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Plan merged assets	$ 16,400,000
Percentage of total common shares outstanding	2.00%
Dividends deducted	$ 200,000	400,000	500,000
Tax benefit from dividends	100,000	200,000	200,000
Contribution to employee stock ownership plan	$ 0	0	0
Shares outstanding, employee stock ownership plan	354,467
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Completion of the minimum of hours of employee stock ownership plan	1000 hours
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options granted	6,424,600
Stock options, Exercise prices lower	$ 11.74
Stock options, Exercise prices upper	$ 34.28
Purchase of shares	2,733,845
Stock option shares terminated	852,202
Stock option plans remain outstanding	2,838,553
Stock options vesting period	5 years
Options issued to non-employee advisors	0
Shares available for issuance of awards	1,561,002
Aggregate intrinsic value of options outstanding	$ 13,400,000	$ 16,900,000
Weighted average remaining contractual life	2 years 8 months 27 days	3 years 6 months 7 days
Intrinsic value for options exercisable	$ 10,400,000	$ 10,500,000
Weighted average remaining contractual life	2 years 4 months 10 days	3 years 2 months 19 days
Aggregate intrinsic value of options exercised and sold	$ 3,700,000	$ 3,700,000	$ 3,600,000
Total unrecognized compensation cost	$ 3,500,000
Expected recognition period of unrecognized compensation expense	1 year 7 months 6 days
Stock Options [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options expiration after grant date	7 years
Stock Options [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options expiration after grant date	10 years
Restricted Stock Units R S U [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unrecognized compensation expense net of forfeitures	$ 6,100,000
Stock based compensation expense for restricted stock	$ 1,800,000	$ 2,600,000
Expected recognition period of unrecognized compensation expense	3 years 3 months 18 days
Common Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock remained available for grants of awards					1,875,000
Minimum rate of exercise price granted	100.00%

Shareholders' Equity (Details) - shares	Dec. 31, 2012	Dec. 31, 2011	May 14, 2008
Shareholders' Equity (Textual) [Abstract]
Repurchases of common stock authorized	0	0	2,000,000
Common stock remaining authorized for repurchase	2,000,000

Commitments and Contingencies (Details) $ in Thousands	Dec. 31, 2012 USD ($)
Minimum payments under leases exclusive of property taxes and insurance
2013	$ 1,225
2014	740
2015	674
2016	670
2017	670
Thereafter	613
Total minimum future lease payments	$ 4,592

Commitments and Contingencies (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Commitments and Contingencies (Textual) [Abstract]
Rent expense	$ 3.1	$ 2.4	$ 2.3

Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2011	Dec. 31, 2012
Summary of Intangible Assets
Estimated useful life in years	11 years
Trade Name	$ 5,700	$ 5,700
Customer Relationships	9,100	9,100
Intangible Assets, gross	14,800	14,800
Less Accumulated Amortization	(2,489)	(3,313)
Intangible Assets, net	$ 12,311	$ 11,487

Intangible Assets (Details Textual) $ in Millions	12 Months Ended
Intangible Assets (Details Textual) $ in Millions	Dec. 31, 2012 USD ($)
Intangible Assets (Textual) [Abstract]
Expected amortization expense for 2013	$ 0.8
Expected amortization expense for 2014	0.8
Expected amortization expense for 2015	0.8
Expected amortization expense for 2016	0.8
Expected amortization expense for 2017	0.8
Thereafter	0.8
Subsequent impairment of the underlying assets	$ 0.0

Related Party Transactions (Details) $ in Millions	12 Months Ended
Related Party Transactions (Details) $ in Millions	Dec. 31, 2012 USD ($)	Dec. 31, 2011 USD ($) Segment
Related Party Transactions (Textual) [Abstract]
Acquisition of liquid and solid containment tanks	$ 38.3	$ 30.3
Number of lease of operating facilities \| Segment		2
Payments for leases and services		$ 0.2
Amounts due to Sabre Manufacturing, LLC	$ 1.0	$ 3.0

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties.

+ References + Details

Segment Reporting (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
Segment Reporting (Details) - USD ($) $ in Thousands	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Summarized financial information for the Company's reportable segments
Rental Revenues	$ 65,117	$ 63,418	$ 60,389	$ 59,520	$ 62,798	$ 60,964	$ 57,118	$ 54,026	$ 248,444	$ 234,906	$ 200,615
Rental Related Services Revenues									46,920	39,486	34,702
Sales and Other Revenues									66,444	66,382	54,055
Total Revenues	101,950	99,430	83,765	78,929	85,206	104,961	79,530	72,973	364,074	342,670	291,400
Depreciation of Rental Equipment									63,819	60,187	56,399
Gross Profit	44,039	43,640	40,780	39,835	44,193	47,387	39,359	35,852	168,294	166,791	130,815
Interest Expense (Income) Allocation									9,149	7,606	6,186
Income (Loss) before Provision for Income Taxes	18,851	20,480	17,235	16,301	21,231	25,255	18,760	15,812	72,867	81,058	59,050
Rental Equipment Acquisitions									4,491	8,186	5,388
Accounts Receivable, net (period end)	92,256				92,671				92,256	92,671
Rental Equipment, at cost (period end)	1,072,845				999,189				1,072,845	999,189
Rental Equipment, net book value (period end)	718,853	$ 719,636	$ 710,918	$ 693,577	673,146	$ 655,854	$ 632,518	$ 608,115	718,853	673,146
Mobile Modular [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues									79,518	79,969	82,648
Rental Related Services Revenues									25,775	24,063	22,947
Sales and Other Revenues									14,474	20,577	21,117
Total Revenues									119,767	124,609	126,712
Depreciation of Rental Equipment									13,942	13,780	13,734
Gross Profit									52,022	55,193	56,902
Interest Expense (Income) Allocation									4,547	4,036	3,513
Income (Loss) before Provision for Income Taxes									13,443	19,026	25,080
Rental Equipment Acquisitions									21,042	33,824	22,948
Accounts Receivable, net (period end)	39,066				44,013				39,066	44,013	39,041
Rental Equipment, at cost (period end)	551,101				539,147				551,101	539,147	514,548
Rental Equipment, net book value (period end)	384,813				383,621				$ 384,813	$ 383,621	$ 369,195
Utilization (period end)									66.70%	67.30%	67.20%
Average Utilization									66.40%	67.10%	67.70%
TRS-RenTelco [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues									$ 101,645	$ 95,694	$ 82,540
Rental Related Services Revenues									3,673	3,133	2,240
Sales and Other Revenues									27,855	26,488	22,982
Total Revenues									133,173	125,315	107,762
Depreciation of Rental Equipment									38,174	38,039	37,017
Gross Profit									62,083	57,069	43,475
Interest Expense (Income) Allocation									2,384	2,124	1,791
Income (Loss) before Provision for Income Taxes									33,631	29,024	19,263
Rental Equipment Acquisitions									51,793	55,302	42,406
Accounts Receivable, net (period end)	24,654				24,236				24,654	24,236	20,620
Rental Equipment, at cost (period end)	266,934				258,586				266,934	258,586	250,125
Rental Equipment, net book value (period end)	107,999				105,565				$ 107,999	$ 105,565	$ 98,444
Utilization (period end)									64.10%	67.10%	64.30%
Average Utilization									65.80%	66.00%	66.00%
Adler Tanks [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues									$ 67,281	$ 59,243	$ 35,427
Rental Related Services Revenues									17,472	12,290	9,515
Sales and Other Revenues									2,558	425	289
Total Revenues									87,311	71,958	45,231
Depreciation of Rental Equipment									11,703	8,368	5,648
Gross Profit									51,157	49,619	27,685
Interest Expense (Income) Allocation									2,350	1,659	1,080
Income (Loss) before Provision for Income Taxes									26,706	31,262	14,444
Rental Equipment Acquisitions									55,919	68,628	52,353
Accounts Receivable, net (period end)	24,523				19,226				24,523	19,226	14,751
Rental Equipment, at cost (period end)	254,810				201,456				254,810	201,456	133,095
Rental Equipment, net book value (period end)	226,041				183,960				$ 226,041	$ 183,960	$ 123,941
Utilization (period end)									67.50%	79.80%	84.90%
Average Utilization									71.50%	86.20%	76.00%
Enviroplex [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues
Rental Related Services Revenues
Sales and Other Revenues									23,823	20,788	11,695
Total Revenues									23,823	20,788	11,695
Depreciation of Rental Equipment
Gross Profit									3,032	4,910	2,753
Interest Expense (Income) Allocation									(132)	(213)	(198)
Income (Loss) before Provision for Income Taxes									(913)	1,746	263
Rental Equipment Acquisitions
Accounts Receivable, net (period end)	4,213				5,197				4,213	5,197	2,076
Rental Equipment, at cost (period end)
Rental Equipment, net book value (period end)
Consolidated [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues									248,444	234,906	200,615
Rental Related Services Revenues									46,920	39,486	34,702
Sales and Other Revenues									68,710	68,278	56,083
Total Revenues									364,074	342,670	291,400
Depreciation of Rental Equipment									63,819	60,187	56,399
Gross Profit									168,294	166,791	130,815
Interest Expense (Income) Allocation									9,149	7,606	6,186
Income (Loss) before Provision for Income Taxes									72,867	81,058	59,050
Rental Equipment Acquisitions									128,754	157,754	117,707
Accounts Receivable, net (period end)	92,456				92,671				92,456	92,671	76,488
Rental Equipment, at cost (period end)	1,072,845				999,189				1,072,845	999,189	897,768
Rental Equipment, net book value (period end)	$ 718,853				$ 673,146				$ 718,853	$ 673,146	$ 591,580

Segment Reporting (Details Textual) $ in Thousands	12 Months Ended
Segment Reporting (Details Textual) $ in Thousands	Dec. 31, 2012 USD ($) Segment	Dec. 31, 2011 USD ($)	Dec. 31, 2010 USD ($)
Segment Reporting (Textual) [Abstract]
Revenues from customers	10.00%	10.00%	10.00%
Segment Reporting (Additional Textual) [Abstract]
Number of reportable segments \| Segment	4
Enviroplex [Member]
Segment Reporting (Textual) [Abstract]
Sales revenues	$ 24,240	$ 20,884	$ 12,321
Mobile Modular [Member]
Segment Reporting (Textual) [Abstract]
Sales revenues	$ 417	$ 97	$ 626
Foreign country customers [Member]
Segment Reporting (Textual) [Abstract]
Revenues from customers	9.00%	8.00%	9.00%

Quarterly Financial Information (Unaudited) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Operations Data
Rental Revenues	$ 65,117	$ 63,418	$ 60,389	$ 59,520	$ 62,798	$ 60,964	$ 57,118	$ 54,026	$ 248,444	$ 234,906	$ 200,615
Total Revenues	101,950	99,430	83,765	78,929	85,206	104,961	79,530	72,973	364,074	342,670	291,400
Gross Profit	44,039	43,640	40,780	39,835	44,193	47,387	39,359	35,852	168,294	166,791	130,815
Income from Operations	21,133	22,792	19,617	18,474	23,350	27,306	20,714	17,294	82,016	88,664	65,236
Income Before Provision for Income Taxes	18,851	20,480	17,235	16,301	21,231	25,255	18,760	15,812	72,867	81,058	59,050
Net Income	$ 11,936	$ 12,451	$ 10,479	$ 9,911	$ 13,227	$ 15,355	$ 11,406	$ 9,614	$ 44,777	$ 49,602	$ 36,479
Earnings Per Share:
Basic	$ 0.48	$ 0.50	$ 0.42	$ 0.40	$ 0.54	$ 0.63	$ 0.47	$ 0.40	$ 1.80	$ 2.04	$ 1.52
Diluted	0.47	0.50	0.42	0.39	0.53	0.62	0.46	0.39	1.78	2.00	1.50
Dividends Declared Per Share	$ 0.235	$ 0.235	$ 0.235	$ 0.235	$ 0.23	$ 0.23	$ 0.23	$ 0.23	$ 0.94	$ 0.92	$ 0.90
Shares Used in Per Share Calculations:
Basic	24,847	24,785	24,765	24,639	24,431	24,362	24,340	24,258	24,759	24,349	23,944
Diluted	25,216	25,106	25,149	25,183	24,892	24,719	24,742	24,660	25,156	24,760	24,289
Balance Sheet Data
Rental Equipment, net	$ 718,853	$ 719,636	$ 710,918	$ 693,577	$ 673,146	$ 655,854	$ 632,518	$ 608,115	$ 718,853	$ 673,146
Total Assets	972,446	988,254	963,649	934,282	918,929	895,144	866,700	832,032	972,446	918,929
Notes Payable	302,000	314,193	308,000	292,118	296,500	289,573	270,500	265,771	302,000	296,500
Shareholders' Equity	$ 364,738	$ 355,758	$ 347,500	$ 341,853	$ 333,142	$ 320,410	$ 309,322	$ 300,976	$ 364,738	$ 333,142	$ 294,977	$ 267,413