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Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2012	Oct. 31, 2012
Document and Entity Information [Abstract]
Entity Registrant Name	MCGRATH RENTCORP
Entity Central Index Key	0000752714
Document Type	10-Q
Document Period End Date	Sep. 30, 2012
Amendment Flag	false
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q3
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		24,809,073

Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
REVENUES
Rental	$ 63,418	$ 60,964	$ 183,327	$ 172,108
Rental Related Services	13,010	10,737	34,703	28,616
Rental Operations	76,428	71,701	218,030	200,724
Sales	22,382	32,783	42,318	55,206
Other	620	388	1,776	1,488
Total Revenues	99,430	104,872	262,124	257,418
Direct Costs of Rental Operations
Depreciation of Rental Equipment	16,163	15,357	47,236	44,794
Rental Related Services	10,252	8,321	27,816	22,201
Other	12,698	10,274	33,856	30,479
Total Direct Costs of Rental Operations	39,113	33,952	108,908	97,474
Costs of Sales	16,677	23,622	28,961	37,392
Total Costs of Revenues	55,790	57,574	137,869	134,866
Gross Profit	43,640	47,298	124,255	122,552
Selling and Administrative Expenses	20,848	19,992	63,372	57,238
Income from Operations	22,792	27,306	60,883	65,314
Interest Expense	2,312	2,051	6,867	5,487
Income Before Provision for Income Taxes	20,480	25,255	54,016	59,827
Provision for Income Taxes	8,029	9,900	21,175	23,452
Net Income	$ 12,451	$ 15,355	$ 32,841	$ 36,375
Earnings Per Share:
Basic	$ 0.50	$ 0.63	$ 1.33	$ 1.50
Diluted	$ 0.50	$ 0.62	$ 1.31	$ 1.47
Shares Used in Per Share Calculation:
Basic	24,785	24,362	24,730	24,320
Diluted	25,106	24,719	25,133	24,702
Cash Dividends Declared Per Share	$ 0.235	$ 0.230	$ 0.705	$ 0.690

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
ASSETS
Cash	$ 362	$ 1,229
Accounts Receivable, net of allowance for doubtful accounts of $2,200 in 2012 and $1,500 in 2011	101,048	92,671
Rental Equipment, at cost:
Relocatable Modular Buildings	549,225	539,147
Electronic Test Equipment	274,300	258,586
Liquid and Solid Containment Tanks and Boxes	246,228	201,456
Rental Equipment, gross	1,069,753	999,189
Less Accumulated Depreciation	(350,117)	(326,043)
Rental Equipment, net	719,636	673,146
Property, Plant and Equipment, net	99,916	94,702
Prepaid Expenses and Other Assets	27,899	17,170
Intangible Assets, net	11,693	12,311
Goodwill	27,700	27,700
Total Assets	988,254	918,929
Liabilities:
Notes Payable	314,193	296,500
Accounts Payable and Accrued Liabilities	61,615	58,854
Deferred Income	35,642	25,067
Deferred Income Taxes, net	221,046	205,366
Total Liabilities	632,496	585,787
Shareholders' Equity:
Common Stock, no par value - Authorized -- 40,000 shares Issued and Outstanding -- 24,809 shares in 2012 and 24,576 shares in 2011	82,449	74,878
Retained Earnings	273,309	258,264
Total Shareholders' Equity	355,758	333,142
Total Liabilities and Shareholders' Equity	$ 988,254	$ 918,929

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) shares in Thousands, $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 2,200	$ 1,500
Common Stock, no par value
Common Stock, Shares Authorized	40,000	40,000
Common Stock, Shares Issued	24,809	24,576
Common Stock, Shares Outstanding	24,809	24,576

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income	$ 32,841	$ 36,375
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Depreciation and Amortization	53,665	49,746
Provision for Doubtful Accounts	1,775	1,373
Non-Cash Stock-Based Compensation	3,154	3,709
Gain on Sale of Used Rental Equipment	(9,381)	(9,713)
Change In:
Accounts Receivable	(10,152)	(14,526)
Income Taxes Receivable		6,131
Prepaid Expenses and Other Assets	(10,729)	(109)
Accounts Payable and Accrued Liabilities	3,580	10,467
Deferred Income	10,575	1,641
Deferred Income Taxes	15,680	19,401
Net Cash Provided by Operating Activities	91,008	104,495
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of Rental Equipment	(106,219)	(120,699)
Purchase of Property, Plant and Equipment	(11,025)	(15,181)
Proceeds from Sale of Used Rental Equipment	20,556	21,502
Net Cash Used in Investing Activities	(96,688)	(114,378)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net Borrowings (Repayments) Under Bank Lines of Credit	17,693	(64,067)
Borrowings Under Private Placement		100,000
Principal Payments on Senior Notes		(12,000)
Proceeds from the Exercise of Stock Options	3,572	1,848
Excess Tax Benefit from Exercise and Disqualifying Disposition of Stock Options	844	408
Payment of Dividends	(17,296)	(16,644)
Net Cash Provided by Financing Activities	4,813	9,545
Net Decrease in Cash	(867)	(338)
Cash Balance, beginning of period	1,229	990
Cash Balance, end of period	362	652
Interest Paid, during the period	5,854	3,705
Net Income Taxes Paid (Refunds Received), during the period	4,633	(2,696)
Dividends Accrued During the period, not yet paid	6,156	5,772
Rental Equipment Acquisitions, not yet paid	$ 6,868	$ 5,545

Condensed Consolidated Financial Information

9 Months Ended

Sep. 30, 2012

Condensed Consolidated Financial Information [Abstract]

CONDENSED CONSOLIDATED FINANCIAL INFORMATION

NOTE 1. CONDENSED CONSOLIDATED FINANCIAL INFORMATION

The condensed consolidated financial statements for the three and nine months ended September 30, 2012 and 2011 have not been audited, but in the opinion of management, all adjustments (consisting of normal recurring accruals, consolidation and eliminating entries) necessary for the fair presentation of the consolidated financial positions, results of operations and cash flows of McGrath RentCorp (the “Company”) have been made. The accompanying unaudited condensed consolidated financial statements have been prepared pursuant to the rules and regulations of the Securities and Exchange Commission (the “SEC”). Certain information and note disclosures normally included in annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to those rules and regulations. The consolidated results for the nine months ended September 30, 2012 should not be considered as necessarily indicative of the consolidated results for the entire fiscal year. These condensed consolidated financial statements should be read in conjunction with the financial statements and notes thereto included in the Company’s latest Annual Report on Form 10-K filed with the SEC on February 29, 2012 for the year ended December 31, 2011 (the “2011 Annual Report”).

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

In order to conform to current year presentation, certain amounts in 2011 were reclassified from selling and administrative expenses to other revenues. This reclassification had no impact on net income, earnings per share or operating cash flows.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References

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-Name Statement of Position (SOP)
-Number 94-6
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-Name Accounting Research Bulletin (ARB)
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+ Details

Earnings Per Share

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

EARNINGS PER SHARE

NOTE 2. 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 as net income divided by the weighted-average number of shares outstanding of common stock and common stock equivalents for the period, including the dilutive effects of stock options and other potentially dilutive securities. Common stock equivalents result from the number of dilutive options computed using the treasury stock method and the average share price for the reported period. The table below presents the weighted-average number of shares of common stock used to calculate basic and diluted earnings per share:


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2012		2011		2012		2011
Weighted-average number of shares of common stock for calculating basic earnings per share		24,785		24,362		24,730		24,320
Effect of potentially dilutive securities from equity-based compensation		321		357		403		382

Weighted-average number of shares of common stock for calculating diluted earnings per share		25,106		24,719		25,133		24,702

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

Three Months Ended
September 30,

Nine Months Ended
September 30,

(in thousands)

2012

2011

2012

2011

Options to purchase shares of common stock

1,203

1,175

1,049

1,168

Related Party Transactions

9 Months Ended

Sep. 30, 2012

RELATED PARTY TRANSACTIONS

NOTE 3. RELATED PARTY TRANSACTIONS

The Company acquired liquid and solid containment tanks totaling $10.3 million and $32.1 million during the three and nine months ended September 30, 2012, respectively, compared to $9.2 million and $18.3 million for the same periods in 2011, from Sabre Manufacturing, LLC (“Sabre”), which is controlled by the President of Adler Tank Rentals, LLC, a wholly-owned subsidiary of the Company. Amounts due to Sabre at September 30, 2012 and 2011 were $1.0 million and $0.4 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.

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+ Details

Notes Payable

9 Months Ended

Sep. 30, 2012

Notes Payable [Abstract]

NOTES PAYABLE

NOTE 4. NOTES PAYABLE

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. The Amended Credit Facility contains customary covenants limiting the Company’s ability to, among other things, incur liens, make investments, incur indebtedness, merge or consolidate with others or dispose of assets, pay dividends or distributions, redeem or repurchase Company stock, change the nature of its business, and enter into transactions with affiliates. In addition, the Amended Credit Facility contains financial covenants requiring the Company to not permit: (1) the Consolidated Fixed Charge Coverage Ratio (all defined terms in this Note 4 not otherwise defined herein have the meaning assigned to such terms in the Amended Credit Facility) as of the end of any fiscal quarter to be less than 2.50 to 1.00; (2) the Consolidated Leverage Ratio at any time during any period of four consecutive fiscal quarters to be greater than 2.75 to 1.00; and (3) 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 (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.

In June 2012, the Company entered into a Credit Facility Letter Agreement and a Credit Line Note under the Amended Credit facility 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.

- 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

Goodwill and Intangible Assets

9 Months Ended

Sep. 30, 2012

Goodwill and Intangible Assets [Abstract]

GOODWILL AND INTANGIBLE ASSETS

NOTE 5. GOODWILL AND INTANGIBLE ASSETS

The carrying value of Goodwill was $27,700 as of September 30, 2012 and December 31, 2011.

Changes in the carrying value of Intangible Assets were as follows:


(dollar amounts in thousands)	Estimated Useful Life	December 31,						September 30,
(dollar amounts in thousands)	In Years	2011			Amortization			2012
Trade name	Indefinite	$	5,700			—		$	5,700
Customer Relationships	11		9,100			—			9,100

			14,800			—			14,800
Less Accumulated Amortization			(2,489	)		(618	)		(3,107	)

		$	12,311		$	(618	)	$	11,693

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 Company typically conducts 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 December 31, 2011. 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.

Intangible assets with finite useful lives are amortized over their respective useful lives. Based on the carrying values at September 30, 2012 and assuming no subsequent impairment of the underlying assets, the amortization expense is expected to be $0.2 million for the remainder of fiscal year 2012 and $0.8 million in each of the fiscal years 2013 through 2017.

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Segment Reporting

9 Months Ended

Sep. 30, 2012

Segment Reporting [Abstract]

SEGMENT REPORTING

NOTE 6. SEGMENT REPORTING

The Company’s four reportable segments are (1) its modular building rental division (“Mobile Modular”); (2) its electronic test equipment rental division (“TRS-RenTelco”); (3) its containment solutions for the storage of hazardous and non-hazardous liquids and solids division (“Adler Tanks”); and (4) its classroom manufacturing division selling modular buildings used primarily as classrooms in California (“Enviroplex”). The operations of each of these segments are described in Part I – Item 1, “Business”, and the accounting policies of the segments are described in “Note 2 – Significant Accounting Policies” in the Company’s 2011 Annual Report. Management focuses on several key measures to evaluate and assess each segment’s performance, including rental revenue growth, gross profit, income from operations and income before provision for income taxes. 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 among Mobile Modular, TRS-RenTelco and Adler Tanks based on their pro-rata share of average rental equipment at cost, 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 nine months ended September 30, 2012 and 2011 for the Company’s reportable segments is shown in the following table:


(dollar amounts in thousands)	Mobile Modular			TRS- RenTelco			Adler Tanks			Enviroplex ¹			Consolidated
Nine Months Ended September 30,

2012
Rental Revenues	$	59,414		$	74,796		$	49,117		$	—		$	183,327
Rental Related Services Revenues		19,427			2,831			12,445			—			34,703
Sales and Other Revenues		10,294			17,401			2,493			13,906			44,094
Total Revenues		89,135			95,028			64,055			13,906			262,124
Depreciation of Rental Equipment		10,437			28,280			8,519			—			47,236
Gross Profit		37,659			45,202			38,552			2,842			124,255
Selling and Administrative Expenses		25,317			19,315			15,347			3,393			63,372
Income (Loss) from Operations		12,342			25,887			23,205			(551	)		60,883
Interest Expense (Income) Allocation		3,432			1,800			1,734			(99	)		6,867
Income (Loss) before Provision for Income Taxes		8,910			24,087			21,471			(452	)		54,016
Rental Equipment Acquisitions		16,787			41,082			47,288			—			105,157
Accounts Receivable, net (period end)		46,939			22,278			23,036			8,795			101,048
Rental Equipment, at cost (period end)		549,225			274,300			246,228			—			1,069,753
Rental Equipment, net book value (period end)		385,430			113,574			220,632			—			719,636
Utilization (period end) ²		66.6	%		64.2	%		69.4	%
Average Utilization ²		66.3	%		65.8	%		72.0	%

2011
Rental Revenues	$	59,689		$	70,370		$	42,049		$	—		$	172,108
Rental Related Services Revenues		17,886			2,273			8,457			—			28,616
Sales and Other Revenues		16,835			19,103			341			20,415			56,694
Total Revenues		94,410			91,792			50,847			20,415			257,418
Depreciation of Rental Equipment		10,306			28,561			5,927			—			44,794
Gross Profit		40,970			41,515			35,053			5,014			122,552
Selling and Administrative Expenses		24,027			18,920			11,704			2,587			57,238
Income from Operations		16,943			22,595			23,349			2,427			65,314
Interest Expense (Income) Allocation		2,935			1,544			1,174			(166	)		5,487
Income before Provision for Income Taxes		14,008			21,051			22,175			2,593			59,827
Rental Equipment Acquisitions		27,556			47,454			45,846			—			120,856
Accounts Receivable, net (period end)		45,199			22,409			18,839			3,194			89,641
Rental Equipment, at cost (period end)		534,109			266,354			178,805			—			979,268
Rental Equipment, net book value (period end)		381,669			110,444			163,741			—			655,854
Utilization (period end) ²		67.0	%		66.3	%		90.5	%
Average Utilization ²		67.1	%		65.4	%		86.4	%

1.	Gross Enviroplex sales revenues were $14,320 and $20,512 for the nine months ended September 30, 2012 and 2011, respectively, which includes inter-segment sales to Mobile Modular of $414 and $97, respectively, 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 accessory equipment and for Mobile Modular and Adler Tanks excluding new equipment inventory. 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 for the nine months ended September 30, 2012 and 2011. Revenues from foreign country customers accounted for 10% and 7%, respectively, of the Company’s total revenues for the same periods.

- 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
-Paragraph 34
-URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599

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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

Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2012

Earnings Per Share [Abstract]

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


	Three Months Ended September 30,				Nine Months Ended September 30,
(in thousands)	2012		2011		2012		2011
Weighted-average number of shares of common stock for calculating basic earnings per share		24,785		24,362		24,730		24,320
Effect of potentially dilutive securities from equity-based compensation		321		357		403		382

Weighted-average number of shares of common stock for calculating diluted earnings per share		25,106		24,719		25,133		24,702

Securities not included in the computation of diluted earnings per share

Three Months Ended
September 30,

Nine Months Ended
September 30,

(in thousands)

2012

2011

2012

2011

Options to purchase shares of common stock

1,203

1,175

1,049

1,168

Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2012

Goodwill and Intangible Assets [Abstract]

Summary of Changes in the carrying value of Intangible Assets


(dollar amounts in thousands)	Estimated Useful Life	December 31,						September 30,
(dollar amounts in thousands)	In Years	2011			Amortization			2012
Trade name	Indefinite	$	5,700			—		$	5,700
Customer Relationships	11		9,100			—			9,100

			14,800			—			14,800
Less Accumulated Amortization			(2,489	)		(618	)		(3,107	)

		$	12,311		$	(618	)	$	11,693

Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2012

Segment Reporting [Abstract]

Summarized financial information for the Company's reportable segments


(dollar amounts in thousands)	Mobile Modular			TRS- RenTelco			Adler Tanks			Enviroplex ¹			Consolidated
Nine Months Ended September 30,

2012
Rental Revenues	$	59,414		$	74,796		$	49,117		$	—		$	183,327
Rental Related Services Revenues		19,427			2,831			12,445			—			34,703
Sales and Other Revenues		10,294			17,401			2,493			13,906			44,094
Total Revenues		89,135			95,028			64,055			13,906			262,124
Depreciation of Rental Equipment		10,437			28,280			8,519			—			47,236
Gross Profit		37,659			45,202			38,552			2,842			124,255
Selling and Administrative Expenses		25,317			19,315			15,347			3,393			63,372
Income (Loss) from Operations		12,342			25,887			23,205			(551	)		60,883
Interest Expense (Income) Allocation		3,432			1,800			1,734			(99	)		6,867
Income (Loss) before Provision for Income Taxes		8,910			24,087			21,471			(452	)		54,016
Rental Equipment Acquisitions		16,787			41,082			47,288			—			105,157
Accounts Receivable, net (period end)		46,939			22,278			23,036			8,795			101,048
Rental Equipment, at cost (period end)		549,225			274,300			246,228			—			1,069,753
Rental Equipment, net book value (period end)		385,430			113,574			220,632			—			719,636
Utilization (period end) ²		66.6	%		64.2	%		69.4	%
Average Utilization ²		66.3	%		65.8	%		72.0	%

2011
Rental Revenues	$	59,689		$	70,370		$	42,049		$	—		$	172,108
Rental Related Services Revenues		17,886			2,273			8,457			—			28,616
Sales and Other Revenues		16,835			19,103			341			20,415			56,694
Total Revenues		94,410			91,792			50,847			20,415			257,418
Depreciation of Rental Equipment		10,306			28,561			5,927			—			44,794
Gross Profit		40,970			41,515			35,053			5,014			122,552
Selling and Administrative Expenses		24,027			18,920			11,704			2,587			57,238
Income from Operations		16,943			22,595			23,349			2,427			65,314
Interest Expense (Income) Allocation		2,935			1,544			1,174			(166	)		5,487
Income before Provision for Income Taxes		14,008			21,051			22,175			2,593			59,827
Rental Equipment Acquisitions		27,556			47,454			45,846			—			120,856
Accounts Receivable, net (period end)		45,199			22,409			18,839			3,194			89,641
Rental Equipment, at cost (period end)		534,109			266,354			178,805			—			979,268
Rental Equipment, net book value (period end)		381,669			110,444			163,741			—			655,854
Utilization (period end) ²		67.0	%		66.3	%		90.5	%
Average Utilization ²		67.1	%		65.4	%		86.4	%

1.	Gross Enviroplex sales revenues were $14,320 and $20,512 for the nine months ended September 30, 2012 and 2011, respectively, which includes inter-segment sales to Mobile Modular of $414 and $97, respectively, which have been eliminated in consolidation.

- 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

Earnings Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
Earnings Per Share (Details) - shares shares in Thousands	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Weighted-average number of shares of common stock used to calculate basic and diluted earnings per share
Weighted-average number of shares of common stock for calculating basic earnings per share	24,785	24,362	24,730	24,320
Effect of potentially dilutive securities from equity-based compensation	321	357	403	382
Weighted-average number of shares of common stock for calculating diluted earnings per share	25,106	24,719	25,133	24,702

- 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)
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-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
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-Name Emerging Issues Task Force (EITF)
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
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Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 128
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-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
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-Name Statement of Financial Accounting Standard (FAS)
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-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

Earnings Per Share (Details 1) - shares shares in Thousands	3 Months Ended		9 Months Ended
Earnings Per Share (Details 1) - shares shares in Thousands	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Securities not included in the computation of diluted earnings per share
Options to purchase shares of common stock	1,203	1,175	1,049	1,168

- 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
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-Name Accounting Standards Codification
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-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
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-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
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Reference 8: http://www.xbrl.org/2003/role/presentationRef
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-Name Statement of Financial Accounting Standard (FAS)
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-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

Related Party Transactions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Related Party Transactions (Textual) [Abstract]
Acquisition of liquid and solid containment tanks	$ 10.3	$ 9.2	$ 32.1	$ 18.3
Amounts due to Sabre	$ 1.0	$ 0.4	$ 1.0	$ 0.4

- Definition

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

+ References + Details

Notes Payable (Details)	9 Months Ended
Notes Payable (Details)	Sep. 30, 2012 USD ($)
Unsecured revolving credit facility before amendment [Member]
Notes Payable (Textual) [Abstract]
Unsecured revolving credit facility	$ 350,000,000
Unsecured revolving credit facility after amended [Member]
Notes Payable (Textual) [Abstract]
Revolving credit facility before amended	Jun. 15, 2017
Unsecured revolving credit facility	$ 420,000,000
Line of Credit Facility Covenants Tangible Net Worth Description	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 (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.
Consolidated Leverage Ratio, Years	4 years
Tangible Net Worth sum	$ 246,103,400
Consolidated Net Income	0.25
Net Cash Proceeds from the issuance of Capital Stock	0.90
Revolving credit facility capacity Period after amendment	5 years
Revolving Enhanced Borrowing	$ 450,000,000
Additional commitments	$ 30,000,000
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] \| Unsecured revolving credit facility after amended [Member]
Notes Payable (Textual) [Abstract]
Consolidated Fixed Charge Coverage Ratio	2.50
Consolidated Leverage Ratio	2.75
Minimum [Member] \| Unsecured revolving credit facility after amended [Member]
Notes Payable (Textual) [Abstract]
Consolidated Fixed Charge Coverage Ratio	1.00
Consolidated Leverage Ratio	1.00

Goodwill and Intangible Assets (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2012	Dec. 31, 2011
Summary of Changes in the carrying value 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	(3,107)	(2,489)
Intangible Assets, net	11,693	$ 12,311
Amortization	$ (618)

Goodwill and Intangible Assets (Details Textual) - USD ($) $ in Thousands	Sep. 30, 2012	Dec. 31, 2011
Goodwill and Intangible Assets (Textual) [Abstract]
Carrying value of Goodwill	$ 27,700	$ 27,700
Expected amortization expense for 2012	200
Expected amortization expense for 2013	800
Expected amortization expense for 2014	800
Expected amortization expense for 2015	800
Expected amortization expense for 2016	800
Expected amortization expense for 2017	$ 800

- Definition

Carrying amount as of the balance sheet date, which is the cumulative amount paid and (if applicable) the fair value of any noncontrolling interest in the acquiree, adjusted for any amortization recognized prior to the adoption of any changes in generally accepted accounting principles (as applicable) and for any impairment charges, in excess of the fair value of net assets acquired in one or more business combination transactions.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-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 (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
Segment Reporting (Details) - USD ($) $ in Thousands	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Summarized financial information for the Company's reportable segments
Rental Revenues	$ 63,418	$ 60,964	$ 183,327	$ 172,108
Rental Related Services Revenues	13,010	10,737	34,703	28,616
Sales and Other Revenues	22,382	32,783	42,318	55,206
Total Revenues	99,430	104,872	262,124	257,418
Depreciation of Rental Equipment	16,163	15,357	47,236	44,794
Gross Profit	43,640	47,298	124,255	122,552
Selling and Administrative Expenses	20,848	19,992	63,372	57,238
Income (Loss) from Operations	22,792	27,306	60,883	65,314
Interest Expense (Income) Allocation	2,312	2,051	6,867	5,487
Income (Loss) before Provision for Income Taxes	20,480	25,255	54,016	59,827
Rental Equipment Acquisitions			6,868	5,545
Accounts Receivable, net (period end)	101,048		101,048		$ 92,671
Rental Equipment, at cost (period end)	1,069,753		1,069,753		999,189
Rental Equipment, net book value (period end)	719,636		719,636		$ 673,146
Mobile Modular [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues			59,414	59,689
Rental Related Services Revenues			19,427	17,886
Sales and Other Revenues			10,294	16,835
Total Revenues			89,135	94,410
Depreciation of Rental Equipment			10,437	10,306
Gross Profit			37,659	40,970
Selling and Administrative Expenses			25,317	24,027
Income (Loss) from Operations			12,342	16,943
Interest Expense (Income) Allocation			3,432	2,935
Income (Loss) before Provision for Income Taxes			8,910	14,008
Rental Equipment Acquisitions			16,787	27,556
Accounts Receivable, net (period end)	46,939	45,199	46,939	45,199
Rental Equipment, at cost (period end)	549,225	534,109	549,225	534,109
Rental Equipment, net book value (period end)	385,430	381,669	$ 385,430	$ 381,669
Utilization (period end)			66.60%	67.00%
Average Utilization			66.30%	67.10%
TRS-RenTelco [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues			$ 74,796	$ 70,370
Rental Related Services Revenues			2,831	2,273
Sales and Other Revenues			17,401	19,103
Total Revenues			95,028	91,792
Depreciation of Rental Equipment			28,280	28,561
Gross Profit			45,202	41,515
Selling and Administrative Expenses			19,315	18,966
Income (Loss) from Operations			25,887	22,595
Interest Expense (Income) Allocation			1,800	1,544
Income (Loss) before Provision for Income Taxes			24,087	21,051
Rental Equipment Acquisitions			41,082	47,454
Accounts Receivable, net (period end)	22,278	22,409	22,278	22,409
Rental Equipment, at cost (period end)	274,300	266,354	274,300	266,354
Rental Equipment, net book value (period end)	113,574	110,444	$ 113,574	$ 110,444
Utilization (period end)			64.20%	66.30%
Average Utilization			65.80%	65.40%
Adler Tanks [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues			$ 49,117	$ 42,049
Rental Related Services Revenues			12,445	8,457
Sales and Other Revenues			2,493	341
Total Revenues			64,055	50,847
Depreciation of Rental Equipment			8,519	5,927
Gross Profit			38,552	35,053
Selling and Administrative Expenses			15,347	11,704
Income (Loss) from Operations			23,205	23,349
Interest Expense (Income) Allocation			1,734	1,174
Income (Loss) before Provision for Income Taxes			21,471	22,175
Rental Equipment Acquisitions			47,288	45,846
Accounts Receivable, net (period end)	23,036	18,839	23,036	18,839
Rental Equipment, at cost (period end)	246,228	178,805	246,228	178,805
Rental Equipment, net book value (period end)	220,632	163,741	$ 220,632	$ 163,741
Utilization (period end)			69.40%	90.50%
Average Utilization			72.00%	86.40%
Enviroplex [Member]
Summarized financial information for the Company's reportable segments
Rental Revenues
Rental Related Services Revenues
Sales and Other Revenues			13,906	$ 20,415
Total Revenues			13,906	20,415
Depreciation of Rental Equipment
Gross Profit			2,842	5,014
Selling and Administrative Expenses			3,393	2,587
Income (Loss) from Operations			(551)	2,427
Interest Expense (Income) Allocation			(99)	(166)
Income (Loss) before Provision for Income Taxes			(452)	2,593
Rental Equipment Acquisitions
Accounts Receivable, net (period end)	8,795	3,194	8,795	3,194
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			183,327	172,108
Rental Related Services Revenues			34,703	28,616
Sales and Other Revenues			44,094	56,694
Total Revenues			262,124	257,418
Depreciation of Rental Equipment			47,236	44,794
Gross Profit			124,255	122,552
Selling and Administrative Expenses			63,372	57,238
Income (Loss) from Operations			60,883	65,314
Interest Expense (Income) Allocation			6,867	5,487
Income (Loss) before Provision for Income Taxes			54,016	59,827
Rental Equipment Acquisitions			105,157	120,856
Accounts Receivable, net (period end)	101,048	89,641	101,048	89,641
Rental Equipment, at cost (period end)	1,069,753	979,268	1,069,753	979,268
Rental Equipment, net book value (period end)	$ 719,636	$ 655,854	$ 719,636	$ 655,854

Segment Reporting (Details Textual) $ in Thousands	9 Months Ended
Segment Reporting (Details Textual) $ in Thousands	Sep. 30, 2012 USD ($) Segment	Sep. 30, 2011 USD ($)
Segment Reporting (Textual) [Abstract]
Revenues from customers	10.00%	10.00%
Segment Reporting (Additional Textual) [Abstract]
Number of reportable segments \| Segment	0
Enviroplex [Member]
Segment Reporting (Textual) [Abstract]
Sales revenues	$ 14,320	$ 20,512
Mobile Modular [Member]
Segment Reporting (Textual) [Abstract]
Sales revenues	$ 414	$ 97
Foreign country customers [Member]
Segment Reporting (Textual) [Abstract]
Revenues from customers	10.00%	7.00%