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Condensed Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 22,848	$ 71,657
Other comprehensive income:
Foreign currency translation adjustment, net of tax impact	67	(18)
Comprehensive income	$ 22,915	$ 71,639

- 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

Revenue Recognition

3 Months Ended

Mar. 31, 2024

Revenue from Contract with Customer [Abstract]

Revenue Recognition

NOTE 6. REVENUE RECOGNITION

The Company’s accounting for revenues is governed by two accounting standards. The majority of the Company’s revenues are considered lease or lease related and are accounted for in accordance with Accounting Standards Codification 842, Leases (Topic 842). Revenues determined to be non-lease related are accounted for in accordance with ASC 606, Revenue from Contracts with Customers (Topic 606). The Company accounts for revenues when approval and commitment from both parties have been obtained, the rights of the parties are identified, payment terms are identified, the contract has commercial substance and collectability of consideration is probable. The Company typically recognizes non-lease related revenues at a point in time because the customer does not simultaneously consume the benefits of the Company’s promised goods and services, or performance obligations, and obtains control when delivery and installation are complete. For contracts that have multiple performance obligations, the transaction price is allocated to each performance obligation in the contract based on the Company’s best estimate of the standalone selling prices of each distinct performance obligation in the contract. The standalone selling price is typically determined based upon the expected cost plus an estimated margin of each performance obligation.

Revenue from contracts that satisfy the criteria for over time recognition are recognized as work is performed by using the ratio of costs incurred to estimated total contract costs for each contract. The majority of revenue for these contracts is derived from long-term projects which typically span multiple quarters. The timing of revenue recognition, billings, and cash collections results in billed contract receivables and contract assets on the Company's Consolidated Balance Sheets. In the Company’s contracts, amounts are billed as work progresses in accordance with agreed-upon contractual terms, either at periodic intervals or upon achievement of contractual milestones. Billings can occur subsequent to revenue recognition, resulting in contract assets, or in advance, resulting in contract liabilities. These contract assets and liabilities are reported on the Consolidated Balance Sheets on a contract-by-contract basis at the end of each reporting period. The contract liabilities included in Deferred income on the Company’s Consolidated Balance Sheets totaled $54.3 million and $40.7 million at March 31, 2024 and December 31, 2023, respectively. Sales revenues totaling $9.7 million were recognized during the three months ended March 31, 2024, which were included in the contract liability balance at December 31, 2023. For certain modular building sales, the customer retains a small portion of the contract price until full completion of the contract, or revenue is recognizable prior to customer billing, which results in revenue earned in excess of billings. These unbilled contract assets are included in Accounts receivable on the Company’s Consolidated Balance Sheets and totaled $8.4 million and $8.7 million at March 31, 2024 and December 31, 2023, respectively. The Company did not recognize any material contract asset impairments during the periods ended March 31, 2024 and December 31, 2023, respectively.

The Company's uncompleted contracts with customers which meet the criteria for over-time revenue recognition have unsatisfied or partially satisfied performance obligations. As of March 31, 2024, approximately $50.3 million of revenue is expected to be recognized for unsatisfied or partially satisfied obligations. The Company expects to recognize revenue for approximately one half of

these unsatisfied or partially satisfied performance obligations over the next 12 months, with the remaining balance recognized thereafter. For the three months ended March 31, 2024, approximately $40.2 million of revenue was recognized for sales and non-lease services transferred at a point in time and approximately $7.5 million of revenue was recognized for sales and non-lease services transferred over time.

The Company generally rents and sells to customers on 30 day payment terms. The Company does not typically offer variable payment terms or accept non-monetary consideration. Amounts billed and due from the Company’s customers are classified as Accounts receivable on the Company’s consolidated balance sheet. For certain sales of modular buildings, progress payments from the customer are received during the manufacturing of new equipment, or the preparation of used equipment. The advance payments are not considered a significant financing component because the payments are used to meet working capital needs during the contract and to protect the Company from the customer failing to adequately complete their obligations under the contract.

Lease Revenues

Rental revenues from operating leases are recognized on a straight-line basis over the term of the lease for all operating segments. Rental billings for periods extending beyond period end are recorded as deferred income and are recognized in the period earned. Rental related services revenues are primarily associated with relocatable modular buildings. For modular building leases, rental related services revenues for modifications, delivery, installation, dismantle and return delivery are lease related because the payments are considered minimum lease payments that are an integral part of the negotiated lease agreement with the customer. These revenues are recognized on a straight-line basis over the term of the lease. Certain leases are accounted for as finance 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. As of the three months ended March 31, 2024, the Company’s future minimum lease payments to be received under non-cancelable finance leases were $3.2 million. Of the total investment in sales-type leases, non-current future minimum lease payments are expected to be $0.8 million in 2025, $0.4 million in 2026, and $0.1 million in 2027. The Company’s assessment of current expected losses on these receivables was not material and therefore no credit loss expense was provided as of the three months ended March 31, 2024. Other revenues include interest income on finance leases and rental income on facility leases.

In the three months ended March 31, 2024, the Company’s lease revenues were $140.2 million, consisting of $139.8 million of operating lease revenues and $0.4 million of finance lease revenues. The Company has entered into finance leases to finance certain equipment sales to customers. The lease agreements have a bargain purchase option at the end of the lease term. 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 straight-line basis, which results in a constant rate of return on the unrecovered lease investment. The Company’s finance lease revenues for the three months ended March 31, 2024 include $0.3 million of sales revenues and $0.1 million of interest income.

Non-Lease Revenues

Non-lease revenues are recognized in the period when control of the performance obligation is transferred, in an amount that reflects the consideration the Company expects to be entitled to receive in exchange for those goods or services. For portable storage containers and electronic test equipment, rental related services revenues for delivery and return delivery are considered non-lease revenues.

Sales revenues are typically recognized at a point in time, which occurs upon the completion of delivery, installation and acceptance of the equipment by the customer. Accounting for non-lease revenues requires judgment in determining the point in time the customer gains control of the equipment and the appropriate accounting period to recognize revenue.

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

The following table disaggregates the Company’s revenues by lease (within the scope of Topic 842) and non-lease revenues (within the scope of Topic 606) and the underlying service provided for the three months ended March 31, 2024 and 2023:


(in thousands)	Mobile Modular		Portable Storage		TRS- RenTelco		Enviroplex		Consolidated
Three Months Ended March 31,
2024
Leasing	$	94,890	$	19,030	$	26,245	$	—	$	140,165
Non-lease:
Rental related services		4,272		4,391		623		—		9,286
Sales		25,326		1,212		6,539		1,719		34,796
Other		3,097		127		356		—		3,580
Total non-lease		32,695		5,730		7,518		1,719		47,662
Total revenues	$	127,585	$	24,760	$	33,763	$	1,719	$	187,827

2023
Leasing	$	82,003	$	17,656	$	30,322	$	—	$	129,981
Non-lease:
Rental related services		4,550		4,424		726		—		9,700
Sales		16,967		638		4,623		941		23,169
Other		407		12		449		—		868
Total non-lease		21,924		5,074		5,798		941		33,737
Total revenues	$	103,927	$	22,730	$	36,120	$	941	$	163,718

Customer returns of rental equipment prior to the end of the rental contract term are typically billed a cancellation fee, which is recorded as rental revenue in the period billed. Sales of new relocatable modular buildings, portable storage containers and electronic test equipment 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, warranty costs have not been significant to date.

The Company’s incremental cost of obtaining lease contracts, which consists of salesperson commissions, are deferred and amortized over the initial lease term for modular leases. Incremental costs for obtaining a contract for all other operating segments are expensed in the period incurred because the lease term is typically less than 12 months.

Other Income, net

Other income, net consists of the net gain on sales of property, plant and equipment. These sales are generally recognized at a point in time, with contractually defined performance obligations that are typically transferred upon the closing date of the sale. These types of sales are infrequent in occurrence and reported on the condensed consolidated statements of income within the scope of ASC 610, Other Income. Proceeds to be received from the sale of property, plant and equipment are included in Accounts receivable on the Company's condensed consolidated balance sheets.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-9

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-Topic 606
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-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-10

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-Publisher FASB
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-Name Accounting Standards Codification
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-Section 50
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-SubTopic 10
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-Subparagraph (b)(2)
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Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Topic 606
-Publisher FASB
-URI https://asc.fasb.org//606/tableOfContent

+ Details

Subsequent Event	3 Months Ended
Mar. 31, 2024
Subsequent Events [Abstract]
Subsequent Event	NOTE 11. SUBSEQUENT EVENT On April 23, 2024, the Company entered into a first incremental facility amendment with Bank of America, N.A., as Administrative Agent and the first incremental lender (“BoA”) and the guarantors named therein (the “First Incremental Amendment”). The First Incremental Amendment amends the Second Amended and Restated Credit Agreement, dated as of July 15, 2022, as amended, by and among the Company, BoA, the other lenders named therein, and the guarantors named therein (the “Credit Agreement”) to institute an incremental term loan “A” facility in an aggregate principal amount of $75.0 million (the “Incremental Credit Facility”). The proceeds from the Incremental Credit Facility will be used for general corporate purposes. Concurrently with entry into the First Incremental Amendment, the Company repaid revolving loans issued under the Credit Agreement in an aggregate amount equal to $75.0 million.

Subsequent Event

3 Months Ended

Mar. 31, 2024

Subsequent Events [Abstract]

Subsequent Event

NOTE 11. SUBSEQUENT EVENT

On April 23, 2024, the Company entered into a first incremental facility amendment with Bank of America, N.A., as Administrative Agent and the first incremental lender (“BoA”) and the guarantors named therein (the “First Incremental Amendment”). The First Incremental Amendment amends the Second Amended and Restated Credit Agreement, dated as of July 15, 2022, as amended, by and among the Company, BoA, the other lenders named therein, and the guarantors named therein (the “Credit Agreement”) to institute an incremental term loan “A” facility in an aggregate principal amount of $75.0 million (the “Incremental Credit Facility”). The proceeds from the Incremental Credit Facility will be used for general corporate purposes. Concurrently with entry into the First Incremental Amendment, the Company repaid revolving loans issued under the Credit Agreement in an aggregate amount equal to $75.0 million.

Acquisitions - Additional Information (Detail) $ in Thousands				3 Months Ended	12 Months Ended
	Apr. 01, 2023 USD ($)	Mar. 01, 2023 USD ($) PortableStorage	Feb. 01, 2023 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Jul. 01, 2023 USD ($)
Business Acquisition [Line Items]
Combined acquired goodwill				$ 323,224	$ 323,224
Goodwill deductible for tax purpose, period				15 years
Intangible assets				$ 62,020	$ 64,588
Combined federal and state tax rate				26.50%
Non-compete Agreements [Member]
Business Acquisition [Line Items]
Acquired intangible assets, expected useful life				5 years	5 years
Vesta Modular [Member]
Business Acquisition [Line Items]
Purchase of assets			$ 437,200
Business acquisition, transaction costs			7,700
Purchase price			437,210
Combined acquired goodwill			$ 211,178
Vesta Modular [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired intangible assets, expected useful life			11 years
Vesta Modular [Member] \| Trade Name [Member]
Business Acquisition [Line Items]
Acquired intangible assets, expected useful life				9 months
Brekke Storage [Member]
Business Acquisition [Line Items]
Business acquisition, transaction costs		$ 200
Purchase price		$ 16,382
Increased number of portable storage \| PortableStorage		2,700
Combined acquired goodwill		$ 4,083
Brekke Storage [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired intangible assets, expected useful life		8 years
Vesta Modular, Brekke Storage and Dixie Storage [Member]
Business Acquisition [Line Items]
Combined acquired goodwill				$ 216,800
Dixie Storage [Member]
Business Acquisition [Line Items]
Business acquisition, transaction costs	$ 100
Purchase price	4,751
Purchase price including acquisition costs	4,900
Combined acquired goodwill	$ 1,555
Dixie Storage [Member] \| Customer Relationships [Member]
Business Acquisition [Line Items]
Acquired intangible assets, expected useful life	9 years
Inland Leasing [Member]
Business Acquisition [Line Items]
Purchase price						$ 3,800
Rental equipment						3,000
Intangible assets						$ 700

Discontinued Operations - Schedule of Assets and Liabilities on Discontinued Operations Reported in Consolidated Balance Sheets (Parenthetical (Detail) $ in Thousands	Dec. 31, 2022 USD ($)
Adler Tank Rentals, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Allowance for credit losses	$ 450

Discontinued Operations - Summary of Results of Discontinued Operations Reported in Condensed Consolidated Statements of Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Gross Profit
Interest expense allocation		$ (374)
Income from discontinued operations before provision for income taxes		1,709
Provision for income taxes from discontinued operations		453
Income from discontinued operations		60,139
Sales [Member]
Revenues
Total non-lease revenues	$ 35,069	23,660
Other [Member]
Revenues
Total non-lease revenues	$ 2,846	2,679
Adler Tank Rentals, LLC
Revenues
Rental		6,520
Rental related services		2,584
Rental operations		9,104
Total revenues		9,438
Direct costs of rental operations:
Depreciation of rental equipment		1,325
Rental related services		2,020
Other		1,270
Total direct costs of rental operations		4,614
Costs of sales		159
Total costs of revenues		4,773
Gross Profit
Rental		3,926
Rental related services		564
Rental operations		4,490
Total gross profit		4,665
Selling and administrative expenses		2,582
Operating income		2,083
Interest expense allocation		(374)
Income from discontinued operations before provision for income taxes		1,709
Provision for income taxes from discontinued operations		453
Income from discontinued operations		1,256
Adler Tank Rentals, LLC \| Sales [Member]
Revenues
Total non-lease revenues		269
Gross Profit
Total gross profit		110
Adler Tank Rentals, LLC \| Other [Member]
Revenues
Total non-lease revenues		65
Gross Profit
Total gross profit		$ 65

Earnings Per Share - Weighted-Average Number of Shares of Common Stock Used to Calculate Basic and Diluted Earnings Per Share (Detail) - shares shares in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Earnings Per Share [Abstract]
Weighted-average number of shares of common stock for calculating basic earnings per share	24,513	24,416
Effect of potentially dilutive securities from equity-based compensation	51	126
Weighted-average number of shares of common stock for calculating diluted earnings per share	24,564	24,542

Segment Reporting

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Segment Reporting

NOTE 10. SEGMENT REPORTING

During the quarter ended December 31, 2023, the Company determined that its Portable Storage business segment met the criteria for separate recognition as defined in the Accounting Standards Codification ("ASC") Topic 280, Segment Reporting. The guidance under this topic requires a public business entity to evaluate both quantitative and qualitative thresholds to determine the significance of a business segment and whether the separate reporting of a business segment enhances the users' understanding of the reporting entity's performance, future net cash flows and judgments. The Company evaluated the guidance within Topic 280 and made its determination to separately report the Portable Storage segment primarily due to the Company's continued growth in container fleet purchases and related increased revenues and improved profitability performance when compared to previously reported periods. In addition to this determination, the Company also divested its Adler Tanks business segment during the year ended December 31, 2023. Additional information regarding the divestiture of Adler Tanks can be found in Note 5 of the condensed consolidated financial statements.

At March 31, 2024, the Company was comprised of four reportable segments: (1) its modular building segment (“Mobile Modular”); (2) its portable storage container segment ("Portable Storage"); (3) its electronic test equipment segment (“TRS-RenTelco”); and (4) its classroom manufacturing segment 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 1 – Summary of Significant Accounting Policies” in the Company’s 2023 Annual Report. Management focuses on several key measures to evaluate and assess each segment’s performance, including rental revenue growth, gross profit and gross margins, 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, Portable Storage and TRS-RenTelco based on their pro-rata share of direct revenues. Interest expense is allocated amongst Mobile Modular, Portable Storage and TRS-RenTelco 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 three months ended March 31, 2024 and 2023 for the Company’s reportable segments are shown in the following table:


(dollar amounts in thousands)	Mobile Modular			Portable Storage			TRS- RenTelco			Enviroplex1			Consolidated
Three Months Ended March 31,
2024
Rental revenues	$	76,496		$	18,407		$	25,429		$ —			$	120,332
Rental related services revenues		24,133			4,723			724			—			29,580
Sales and other revenues		26,956			1,630			7,610			1,719			37,915
Total revenues		127,585			24,760			33,763			1,719			187,827
Depreciation of rental equipment		9,874			965			11,527			—			22,366
Gross profit		61,845			17,103			13,875			445			93,268
Selling and administrative expenses		40,087			9,010			8,918			1,803			59,818
Other income		(6,220	)		(1,319	)		(1,742	)		—			(9,281	)
Income (loss) from operations		27,978			9,412			6,699			(1,358	)		42,731
Interest (expense) income allocation		(9,799	)		(1,420	)		(2,062	)		577			(12,704	)
Income (loss) before provision for income taxes		18,179			7,992			4,505			(781	)		29,895
Rental equipment acquisitions		59,263			5,128			3,393			—			67,784
Accounts receivable, net (period end)		166,382			14,117			22,637			8,814			211,950
Rental equipment, at cost (period end)		1,345,919			240,517			370,641		—				1,957,077
Rental equipment, net book value (period end)		1,013,965			220,811			133,766		—				1,368,542
Utilization (period end) 2		78.5	%		68.8	%		56.8	%
Average utilization 2		78.7	%		69.8	%		56.5	%
2023
Rental revenues	$	64,056		$	17,057		$	29,134		$ —			$	110,247
Rental related services revenues		21,534			4,718			880			—			27,132
Sales and other revenues		18,337			955			6,106			941			26,339
Total revenues		103,927			22,730			36,120			941			163,718
Depreciation of rental equipment		8,657			787			12,389			—			21,833
Gross profit		46,171			15,451			15,620			125			77,367
Selling and administrative expenses		38,456			8,058			9,451			1,533			57,498
Other income		—			—			—			—			—
Income (loss) from operations		7,715			7,393			6,169			(1,408	)		19,869
Interest (expense) income allocation		(5,387	)		(884	)		(1,742	)		549			(7,464	)
Income (loss) before provision for income taxes		2,328			6,509			4,653			(859	)		12,631
Rental equipment acquisitions		54,448			7,651			10,112			—			72,211
Accounts receivable, net (period end)		135,104			13,776			24,493			3,633			177,006
Rental equipment, at cost (period end)		1,200,869			211,215			401,801		—				1,813,885
Rental equipment, net book value (period end)		901,090			195,074			171,104		—				1,267,268
Utilization (period end) 2		79.5	%		79.8	%		59.0	%
Average utilization 2		79.4	%		80.8	%		59.2	%

Gross Enviroplex sales revenues were $1,719 and $941 for the three months ended March 31, 2024 and 2023, respectively. There were no inter-segment sales to Mobile Modular in the three months ended March 31, 2024 and 2023, which required elimination 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 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 three months ended March 31, 2024 and 2023. Revenues from foreign country customers accounted for 2% and 3% of the Company’s total revenues for the same periods, respectively.

NOTE 11. SUBSEQUENT EVENT

- 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/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-15

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 31
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-31

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//280/tableOfContent

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 26
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-26

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 34
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-34

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 12: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
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-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 21
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-21

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

+ Details

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Assets
Cash	$ 1,912	$ 877
Accounts receivable, net of allowance for credit losses of $2,819 at March 31, 2024 and $2,801 at December 31, 2023	211,950	227,368
Rental equipment, at cost:
Relocatable modular buildings	1,345,919	1,291,093
Portable storage containers	240,517	236,123
Electronic test equipment	370,641	377,587
Rental equipment, gross	1,957,077	1,904,803
Less: accumulated depreciation	(588,535)	(575,480)
Rental equipment, net	1,368,542	1,329,323
Property, plant and equipment, net	189,166	169,114
Inventories	24,548	15,425
Prepaid expenses and other assets	82,066	87,364
Intangible assets, net	62,020	64,588
Goodwill	323,224	323,224
Total assets	2,263,428	2,217,283
Liabilities:
Notes payable	798,561	762,975
Accounts payable	57,162	58,760
Accrued Liabilities	95,725	108,763
Deferred income	122,696	111,428
Deferred income taxes, net	246,264	241,555
Total liabilities	1,320,408	1,283,481
Shareholders’ equity:
Common stock, no par value - Authorized 40,000 shares Issued and outstanding - 24,541 shares as of March 31, 2024 and 24,496 shares as of December 31, 2023	109,249	111,122
Retained earnings	833,820	822,796
Accumulated other comprehensive loss	(49)	(116)
Total shareholders’ equity	943,020	933,802
Total liabilities and shareholders’ equity	$ 2,263,428	$ 2,217,283

Earnings Per Share - Additional Information (Detail) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Aug. 31, 2015
Earnings Per Share Basic [Line Items]
Anti-dilutive securities in the form of common stock excluded from computation of diluted earnings per share	73,190	96,241
Shares repurchased	0	0
Shares remain authorized for repurchase	1,309,805
Maximum [Member]
Earnings Per Share Basic [Line Items]
Common stock shares authorized for repurchase			2,000,000

- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References + Details

Earnings Per Share

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Earnings Per Share

NOTE 7. 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 effect of stock options, unvested restricted stock awards and other potentially dilutive securities. 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 March 31,
(in thousands)	2024		2023
Weighted-average number of shares of common stock for calculating basic earnings per share		24,513		24,416
Effect of potentially dilutive securities from equity-based compensation		51		126
Weighted-average number of shares of common stock for calculating diluted earnings per share		24,564		24,542

There were 73,190 and 96,241 anti-dilutive securities excluded from the computation of diluted earnings per share for the three months ended March 31, 2024 and 2023, respectively.

The Company has in the past made purchases of shares of its common stock from time to time in over-the-counter market (NASDAQ) transactions, through privately negotiated, large block transactions and through a share repurchase plan, in accordance with Rule 10b5-1 of the Securities Exchange Act of 1934. In August 2015, the Company’s Board of Directors authorized the Company to repurchase up to 2,000,000 shares of the Company's outstanding common stock (the “Repurchase Plan”). The amount and time of the specific repurchases are subject to prevailing market conditions, applicable legal requirements and other factors, including management’s discretion. All shares repurchased by the Company are canceled and returned to the status of authorized but unissued shares of common stock. There can be no assurance that any authorized shares will be repurchased, and the Repurchase Plan may be modified, extended or terminated by the Company’s Board of Directors at any time. There were no shares repurchased during the three months ended March 31, 2024 and 2023. As of March 31, 2024, 1,309,805 shares remained authorized for repurchase under the Repurchase Plan.

Revenue Recognition - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Disaggregation Of Revenue [Line Items]
Period for credit risk identified	30 days
Revenue from contracts criteria over time	multiple quarters
Sales revenues totaling	$ 9,700
Revenues	187,827	$ 163,718
Total Future minimum flease payments expected to be received	3,200
Future minimum flease payments expected to be received in 2025	800
Future minimum flease payments expected to be received in 2026	400
Future minimum flease payments expected to be received in 2027	100
Lease revenue	140,200
Operating lease revenue	139,800
Finance lease revenue	400
Finance lease revenue, sales revenue	300
Finance lease revenue, interest income	$ 100
Period for warranties for rental equipment	90 days
Period for warranties for equipment manufactured	1 year
Transferred at Point in Time [Member]
Disaggregation Of Revenue [Line Items]
Revenues	$ 40,200
Transferred Over Time [Member]
Disaggregation Of Revenue [Line Items]
Revenues	7,500
Deferred Income [Member]
Disaggregation Of Revenue [Line Items]
Customer contract liability	54,300		$ 40,700
Accounts Receivable [Member]
Disaggregation Of Revenue [Line Items]
Unbilled contract assets	$ 8,400		$ 8,700

Condensed Consolidated Statements of Shareholders' Equity (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash dividends declared per share	$ 0.475	$ 0.465
Retained Earnings [Member]
Cash dividends declared per share	$ 0.475	$ 0.465

Segment Reporting - Summarized Financial Information for Company's Reportable Segments (Parenthetical) (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Revenues	$ 187,827,000	$ 163,718,000
Sales [Member]
Segment Reporting Information [Line Items]
Sales revenues	35,069,000	23,660,000
Operating Segments [Member] \| Enviroplex [Member] \| Sales [Member]
Segment Reporting Information [Line Items]
Revenues	1,719,000	941,000
Inter-segment Eliminations [Member] \| Mobile Modular [Member]
Segment Reporting Information [Line Items]
Sales revenues	$ 0	$ 0

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 924
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479941/924-10-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-5

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 30
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-30

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 42
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-42

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 40
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-40

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-22

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 32
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-32

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 41
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482810/280-10-50-41

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479806/606-10-50-4

+ Details

- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

+ References

+ Details

Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2024

Disaggregation of Revenue [Abstract]

Summary of Disaggregates the Company's Revenue by Lease and Non Lease


(in thousands)	Mobile Modular		Portable Storage		TRS- RenTelco		Enviroplex		Consolidated
Three Months Ended March 31,
2024
Leasing	$	94,890	$	19,030	$	26,245	$	—	$	140,165
Non-lease:
Rental related services		4,272		4,391		623		—		9,286
Sales		25,326		1,212		6,539		1,719		34,796
Other		3,097		127		356		—		3,580
Total non-lease		32,695		5,730		7,518		1,719		47,662
Total revenues	$	127,585	$	24,760	$	33,763	$	1,719	$	187,827

2023
Leasing	$	82,003	$	17,656	$	30,322	$	—	$	129,981
Non-lease:
Rental related services		4,550		4,424		726		—		9,700
Sales		16,967		638		4,623		941		23,169
Other		407		12		449		—		868
Total non-lease		21,924		5,074		5,798		941		33,737
Total revenues	$	103,927	$	22,730	$	36,120	$	941	$	163,718

Acquisitions - Summary of Pro Forma Data (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Business Acquisition [Line Items]
Pro-forma total revenues		$ 171,361
Pro-forma net income		$ 11,222
Pro-forma basic earnings per share		$ 0.46
Pro-forma diluted earnings per share		$ 0.46
Actual total revenues	$ 187,827
Actual net income	$ 22,848
Actual basic earnings per share	$ 0.93
Actual diluted earnings per share	$ 0.93
Vesta Modular [Member]
Business Acquisition [Line Items]
Actual total revenues		$ 17,584
Actual net income		$ 3,679
Actual basic earnings per share		$ 0.15
Actual diluted earnings per share		$ 0.15

Acquisitions (Tables)

3 Months Ended

Mar. 31, 2024

Business Combinations [Abstract]

Summary of Preliminary Purchase Price Allocations Reflecting Estimated Fair Values of Assets Acquired and Liabilities Assumed

The following tables summarize the purchase price allocations reflecting estimated fair values of assets acquired and liabilities assumed in the Vesta Modular, Brekke Storage and Dixie Storage business acquisitions, with excess amounts allocated to goodwill. The estimated fair values of the assets acquired and liabilities assumed at the acquisition date are determined based on preliminary valuations and analyses. Accordingly, the Company has made provisional estimates for the assets acquired and liabilities assumed. The valuation of intangible assets acquired is based on certain valuation assumptions including cash flow projections, discount rates, contributory asset

charges and other valuation model inputs. The valuation of tangible long-lived assets acquired is dependent upon various analyses including an analysis of the condition and estimated remaining economic lives of the assets acquired.

Vesta Modular:


(dollar amounts in thousands)
Rental equipment	$	212,639
Intangible assets:
Goodwill		211,178
Customer relationships		29,900
Non-compete		7,100
Trade name		800
Cash		11
Accounts receivable		22,666
Property, plant and equipment		1,437
Prepaid expenses and other assets		3,550
Accounts payable and accrued liabilities		(26,202	)
Deferred income		(14,273	)
Deferred income taxes		(11,596	)
Total purchase price	$	437,210

Brekke Storage:


(dollar amounts in thousands)
Rental equipment	$	10,798
Intangible assets:
Goodwill		4,083
Customer relationships		949
Non-compete		59
Property, plant and equipment		875
Deferred income		(382	)
Total purchase price	$	16,382

Dixie Storage:


(dollar amounts in thousands)
Rental equipment	$	2,758
Intangible assets:
Goodwill		1,555
Customer relationships		259
Non-compete		22
Property, plant and equipment		318
Deferred income		(161	)
Total purchase price	$	4,751

Summary of Pro Forma Data


	(Unaudited)
	Three months ended March 31,
(dollar amounts in thousands, except for per share amounts)	2024		2023
	(Actual)		(Pro Forma)
Pro-forma total revenues	$	187,827	$	171,361
Pro-forma net income	$	22,848	$	11,222
Pro-forma basic earnings per share	$	0.93	$	0.46
Pro-forma diluted earnings per share	$	0.93	$	0.46

Vesta Modular
Actual total revenues			$	17,584
Actual net income			$	3,679
Actual basic earnings per share			$	0.15
Actual diluted earnings per share			$	0.15

Condensed Consolidated Financial Information

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Condensed Consolidated Financial Information

NOTE 1. CONDENSED CONSOLIDATED FINANCIAL INFORMATION

The condensed consolidated financial statements for the three months ended March 31, 2024 and 2023 have not been audited, but in the opinion of management, all adjustments (consisting of normal recurring accruals, consolidating and eliminating entries) necessary for the fair presentation of the consolidated financial position, 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 three months ended March 31, 2024, 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 consolidated financial statements and notes thereto included in the Company’s latest Annual Report on Form 10-K, filed with the SEC on February 21, 2024 for the year ended December 31, 2023 (the “2023 Annual Report”).

Agreement and Plan of Merger with WillScot Mobile Mini Holdings Corp.

On January 28, 2024, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”), with WillScot Mobile Mini Holdings Corp., a Delaware corporation ("WillScot Mobile Mini”), Brunello Merger Sub I, Inc., a California corporation and a direct wholly owned subsidiary of WillScot Mobile Mini (“Merger Sub I”), and Brunello Merger Sub II, LLC, a Delaware limited liability company and direct wholly owned subsidiary of WillScot Mobile Mini (“Merger Sub II”). The Merger Agreement provides that, upon the terms and subject to the conditions set forth therein, Merger Sub I will merge with and into the Company (the “First-Step Merger”), with the Company surviving the First-Step Merger and, immediately thereafter, the Company will merge with and into Merger Sub II (the “Second-Step Merger” and together with the First-Step Merger, the “Transaction”), with Merger Sub II surviving the Second-Step Merger as a wholly owned subsidiary of WillScot Mobile Mini. Each of the parties to the Merger Agreement intends that the Transaction will be treated as a single integrated transaction that qualifies as a “reorganization” within the meaning of Section 368(a) of the U.S. Internal Revenue Code of 1986, as amended. Consummation of the Transaction is subject to the approval of the Company’s shareholders, the receipt of required regulatory approvals, and satisfaction or waiver of other customary closing conditions. The First-Step Merger and the Second-Step Merger will be consummated on the same day.

On the terms and subject to the conditions set forth in the Merger Agreement, at the effective time of the First-Step Merger (the “Effective Time”), each share of common stock, no par value, of the Company (the “Company Common Stock”) issued and outstanding immediately prior to the Effective Time, other than shares of Company Common Stock owned by WillScot Mobile Mini or any subsidiary of WillScot Mobile Mini or the Company, and shares held by shareholders who did not vote in favor of the Transaction (or consent thereto in writing) and who are entitled to demand and properly demands appraisal of such shares, will be automatically converted into the right to receive either (1) $123 in cash (the “Per Share Cash Consideration”) or (2) 2.8211 (the “Exchange Ratio”) shares of validly issued, fully paid and nonassessable shares of common stock, par value $0.0001, of WillScot Mobile Mini (the “WillScot Mobile Mini Common Stock”) (the “Per Share Stock Consideration” together with the Per Share Cash Consideration, the “Merger Consideration”), as determined pursuant to the election and allocation procedures in the Merger Agreement. The Company’s shareholders will have the opportunity to elect to receive either the Per Share Cash Consideration or the Per Share Stock Consideration in respect of their Company Common Stock, provided that 60% of the Company Common Stock will be converted into the cash consideration and 40% of the Company Common Stock will be converted into the stock consideration. Pursuant to the terms of the Merger Agreement, the closing of the Merger Agreement is subject to the satisfaction of customary closing conditions, including adoption of the Merger Agreement by the Company’s shareholders and receipt of regulatory approvals. The closing of the Transaction is not subject to any financing condition.

Inventories

3 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Inventories

NOTE 8. INVENTORIES

Inventories consist of raw materials, supplies and work-in-process. Inventories are measured at the lower of actual cost or net realizable value for acquired units and estimated standard costs for manufactured units. The costs include expenditures incurred in acquiring the inventories, manufacturing, production costs, and other costs incurred in bringing them to their existing location and condition. The following table presents the carrying value of inventories:


(dollar amounts in thousands)	March 31,		December 31,
	2024		2023
Raw materials	$	4,987	$	3,806
Work-in-process		19,561		11,619
Inventories	$	24,548	$	15,425

Inventories (Tables)

3 Months Ended

Mar. 31, 2024

Inventory Disclosure [Abstract]

Summary of Carrying Value of Inventories

The following table presents the carrying value of inventories:


(dollar amounts in thousands)	March 31,		December 31,
	2024		2023
Raw materials	$	4,987	$	3,806
Work-in-process		19,561		11,619
Inventories	$	24,548	$	15,425

Acquisitions

3 Months Ended

Mar. 31, 2024

Business Combinations [Abstract]

Acquisitions

NOTE 4. ACQUISITIONS

On February 1, 2023, the Company completed the acquisition of Vesta Housing Solutions Holdings, Inc. (“Vesta Modular”), a portfolio company of Kinderhook Industries, for $437.2 million cash consideration on the closing date, which included certain adjustments, including net working capital and certain qualified capital expenditures. In connection with the acquisition, the Company purchased a representation and warranty insurance policy to provide certain recourse in the event of breaches of representations and warranties of Vesta Modular and the seller of Vesta Modular under the stock purchase agreement. Vesta Modular was a leading provider of temporary and permanent modular space solutions serving customers between its modular leasing and modular construction divisions. The acquisition was accounted for as a purchase of a “business” in accordance with criteria in Accounting Standards Codification ("ASC") 805, Business Combinations, using the purchase method of accounting. Under the purchase method of accounting, the total purchase price is assigned to tangible and identifiable intangible assets acquired and liabilities assumed based on their fair values on the closing date. The excess of the purchase price over those fair values is recorded as goodwill. The financial results of Vesta Modular were a part of the Mobile Modular segment since February 1, 2023, including $7.7 million of acquisition related transaction costs.

On March 1, 2023, the Company completed the acquisition of Jerald R. Brekke, Inc., DBA Brekke Storage ("Brekke Storage"), for a total purchase price of $16.4 million. Brekke Storage was a regional provider of portable storage solutions in the Colorado market. The acquisition expanded the Portable Storage fleet by approximately 2,700 units and provided a new regional operation to serve the Colorado market. The acquisition was accounted for as a purchase of a “business” in accordance with criteria in ASC 805 using the purchase method of accounting. The financial results of Brekke Storage were a part of the Portable Storage segment since March 1, 2023, including $0.2 million of transaction costs.

On April 1, 2023, the Company completed the acquisition of Dixie Temporary Storage, LLC ("Dixie Storage"), for a purchase price of $4.9 million. Dixie Storage was a regional provider of portable storage solutions in the South Carolina market and is highly complementary to the Company's Portable Storage business segment. The acquisition was accounted for as a purchase of a “business” in accordance with criteria in ASC 805 using the purchase method of accounting. The financial results of Dixie Storage were a part of the Portable Storage segment since April 1, 2023, including $0.1 million of transaction costs.

On July 1, 2023, the Company completed the purchase of assets of Inland Leasing and Storage, LLC ("Inland Leasing"), for a purchase price of $3.8 million. Inland Leasing was a regional provider of portable storage solutions in the Colorado market and is highly complementary to the Company's Portable Storage business segment. The acquisition was accounted for as a purchase of "assets" in accordance with criteria in ASC 805 and the assessment of the fair value of the purchased assets was allocated primarily to rental equipment totaling $3.0 million and intangible assets totaling $0.7 million. Supplemental pro forma information has not been provided as the historical financial results of Inland Leasing were not significant. Incremental transaction costs associated with the asset purchase were not significant.

Vesta Modular:


(dollar amounts in thousands)
Rental equipment	$	212,639
Intangible assets:
Goodwill		211,178
Customer relationships		29,900
Non-compete		7,100
Trade name		800
Cash		11
Accounts receivable		22,666
Property, plant and equipment		1,437
Prepaid expenses and other assets		3,550
Accounts payable and accrued liabilities		(26,202	)
Deferred income		(14,273	)
Deferred income taxes		(11,596	)
Total purchase price	$	437,210

Brekke Storage:


(dollar amounts in thousands)
Rental equipment	$	10,798
Intangible assets:
Goodwill		4,083
Customer relationships		949
Non-compete		59
Property, plant and equipment		875
Deferred income		(382	)
Total purchase price	$	16,382

Dixie Storage:


(dollar amounts in thousands)
Rental equipment	$	2,758
Intangible assets:
Goodwill		1,555
Customer relationships		259
Non-compete		22
Property, plant and equipment		318
Deferred income		(161	)
Total purchase price	$	4,751

The value assigned to identifiable intangible assets was determined based on discounted estimated future cash flows associated with such assets to their present value. The combined acquired goodwill of $216.8 million reflects the strategic fit of Vesta Modular, Brekke Storage and Dixie Storage with the Company’s modular and portable storage business operations. The Company amortizes the acquired customer relationships over their expected useful lives of 11 years for Vesta Modular, 8 years for Brekke Storage and 9 years for Dixie Storage. The expected useful life for the non-compete agreements is 5 years. The trade name intangible acquired from the Vesta Modular acquisition will be amortized over it's useful life of nine months. Goodwill is expected to have an indefinite life and will be subject to future impairment testing. The goodwill is deductible for tax purposes over 15 years.

The following table reports the actual results of the Company for the three months ended March 31, 2024, and the unaudited pro forma financial information for the three months ended March 31, 2023. The pro forma financial information shows the combined results of continuing operations of the Company and Vesta Modular as if the acquisition occurred as of the beginning of the period presented. The pro forma results include the effects of the amortization of the purchased intangible assets and depreciation expense of acquired rental equipment valuation step up, interest expense on the debt incurred to finance the acquisitions. A pro forma adjustment has been made to reflect the income taxes that would have been recorded at the combined federal and state statutory rate of 26.5% on the acquisitions’ combined net income. The pro forma results for the three months ended March 31, 2023, have been adjusted to include

transaction related costs. This pro forma data is presented for informational purposes only and does not purport to be indicative of the results of the future operations or the results that would have occurred had the acquisitions taken place in the periods noted below:


	(Unaudited)
	Three months ended March 31,
(dollar amounts in thousands, except for per share amounts)	2024		2023
	(Actual)		(Pro Forma)
Pro-forma total revenues	$	187,827	$	171,361
Pro-forma net income	$	22,848	$	11,222
Pro-forma basic earnings per share	$	0.93	$	0.46
Pro-forma diluted earnings per share	$	0.93	$	0.46

Vesta Modular
Actual total revenues			$	17,584
Actual net income			$	3,679
Actual basic earnings per share			$	0.15
Actual diluted earnings per share			$	0.15

Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Mar. 31, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Impairment of goodwill and intangible assets	$ 0	$ 0
Amortization expense	2,600,000		$ 2,300,000
Changes to carrying value of goodwill during period	0
Subsequent impairment of the underlying assets	0
Expected annual amortization expense for 2024	7,700,000
Expected annual amortization expense for 2025	10,200,000
Expected annual amortization expense for 2026	9,800,000
Expected annual amortization expense for 2027	9,600,000
Expected annual amortization expense for 2028	8,200,000
Expected annual amortization expense for 2029	$ 4,700,000

Revenue Recognition - Additional Information (Detail 1) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($)
Revenue from Contract with Customer [Abstract]
Revenue, remaining performance obligation	$ 50.3
Revenue, remaining performance obligation, explanation	The Company expects to recognize revenue for approximately one half of these unsatisfied or partially satisfied performance obligations over the next 12 months, with the remaining balance recognized thereafter.

Segment Reporting - Summarized Financial Information for Company's Reportable Segments (Detail) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2024

Mar. 31, 2023

Segment Reporting Information [Line Items]

Rental revenues

$ 120,332

$ 110,247

Rental related services revenues

29,580

27,132

Sales and other revenues

37,915

26,339

Total revenues

187,827

163,718

Depreciation of rental equipment

22,366

21,833

Gross profit

93,268

77,367

Selling and administrative expenses

59,818

57,498

Other income

(9,281)

Income (loss) from operations

42,731

19,869

Interest (expense) income allocation

(12,704)

(7,464)

Income (loss) before provision for income taxes

29,895

12,631

Rental equipment acquisitions

67,784

72,211

Accounts receivable, net (period end)

211,950

177,006

Rental equipment, at cost (period end)

1,957,077

1,813,885

Rental equipment, net book value (period end)

1,368,542

1,267,268

Mobile Modular [Member]

Segment Reporting Information [Line Items]

Rental revenues

76,496

64,056

Rental related services revenues

24,133

21,534

Sales and other revenues

26,956

18,337

Total revenues

127,585

103,927

Depreciation of rental equipment

9,874

8,657

Gross profit

61,845

46,171

Selling and administrative expenses

40,087

38,456

Other income

(6,220)

Income (loss) from operations

27,978

7,715

Interest (expense) income allocation

(9,799)

(5,387)

Income (loss) before provision for income taxes

18,179

2,328

Rental equipment acquisitions

59,263

54,448

Accounts receivable, net (period end)

166,382

135,104

Rental equipment, at cost (period end)

1,345,919

1,200,869

Rental equipment, net book value (period end)

$ 1,013,965

$ 901,090

Utilization (period end)

^[1]

78.50%

79.50%

Average utilization

^[1]

78.70%

79.40%

Portable Storage [Member]

Segment Reporting Information [Line Items]

Rental revenues

$ 18,407

$ 17,057

Rental related services revenues

4,723

4,718

Sales and other revenues

1,630

955

Total revenues

24,760

22,730

Depreciation of rental equipment

965

787

Gross profit

17,103

15,451

Selling and administrative expenses

9,010

8,058

Other income

(1,319)

Income (loss) from operations

9,412

7,393

Interest (expense) income allocation

(1,420)

(884)

Income (loss) before provision for income taxes

7,992

6,509

Rental equipment acquisitions

5,128

7,651

Accounts receivable, net (period end)

14,117

13,776

Rental equipment, at cost (period end)

240,517

211,215

Rental equipment, net book value (period end)

$ 220,811

$ 195,074

Utilization (period end)

^[1]

68.80%

79.80%

Average utilization

^[1]

69.80%

80.80%

TRS-RenTelco [Member]

Segment Reporting Information [Line Items]

Rental revenues

$ 25,429

$ 29,134

Rental related services revenues

724

880

Sales and other revenues

7,610

6,106

Total revenues

33,763

36,120

Depreciation of rental equipment

11,527

12,389

Gross profit

13,875

15,620

Selling and administrative expenses

8,918

9,451

Other income

(1,742)

Income (loss) from operations

6,699

6,169

Interest (expense) income allocation

(2,062)

(1,742)

Income (loss) before provision for income taxes

4,505

4,653

Rental equipment acquisitions

3,393

10,112

Accounts receivable, net (period end)

22,637

24,493

Rental equipment, at cost (period end)

370,641

401,801

Rental equipment, net book value (period end)

$ 133,766

$ 171,104

Utilization (period end)

^[1]

56.80%

59.00%

Average utilization

^[1]

56.50%

59.20%

Enviroplex [Member]

Segment Reporting Information [Line Items]

Sales and other revenues

^[2]

$ 1,719

$ 941

Total revenues

^[2]

1,719

941

Gross profit

^[2]

445

125

Selling and administrative expenses

^[2]

1,803

1,533

Income (loss) from operations

^[2]

(1,358)

(1,408)

Interest (expense) income allocation

^[2]

577

549

Income (loss) before provision for income taxes

^[2]

(781)

(859)

Accounts receivable, net (period end)

^[2]

$ 8,814

$ 3,633

[1]	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 new equipment inventory. The Average utilization for the period is calculated using the average costs of rental equipment.
[2]	Gross Enviroplex sales revenues were $1,719 and $941 for the three months ended March 31, 2024 and 2023, respectively. There were no inter-segment sales to Mobile Modular in the three months ended March 31, 2024 and 2023, which required elimination in consolidation.

Acquisitions - Summary of Preliminary Purchase Price Allocations Reflecting Estimated Fair Values of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Apr. 01, 2023	Mar. 01, 2023	Feb. 01, 2023
Intangible assets:
Goodwill	$ 323,224	$ 323,224
Vesta Modular [Member]
Business Acquisition [Line Items]
Rental equipment					$ 212,639
Intangible assets:
Goodwill					211,178
Cash					11
Accounts receivable					22,666
Property, plant and equipment					1,437
Prepaid expenses and other assets					3,550
Accounts payable and accrued liabilities					(26,202)
Deferred income					(14,273)
Deferred income taxes					(11,596)
Total purchase price					437,210
Vesta Modular [Member] \| Customer Relationships [Member]
Intangible assets:
Intangible assets					29,900
Vesta Modular [Member] \| Trade Name [Member]
Intangible assets:
Intangible assets					800
Vesta Modular [Member] \| Non-compete [Member]
Intangible assets:
Intangible assets					$ 7,100
Brekke Storage [Member]
Business Acquisition [Line Items]
Rental equipment				$ 10,798
Intangible assets:
Goodwill				4,083
Property, plant and equipment				875
Deferred income				(382)
Total purchase price				16,382
Brekke Storage [Member] \| Customer Relationships [Member]
Intangible assets:
Intangible assets				949
Brekke Storage [Member] \| Non-compete [Member]
Intangible assets:
Intangible assets				$ 59
Dixie Storage [Member]
Business Acquisition [Line Items]
Rental equipment			$ 2,758
Intangible assets:
Goodwill			1,555
Property, plant and equipment			318
Deferred income			(161)
Total purchase price			4,751
Dixie Storage [Member] \| Customer Relationships [Member]
Intangible assets:
Intangible assets			259
Dixie Storage [Member] \| Non-compete [Member]
Intangible assets:
Intangible assets			$ 22

Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2024

Earnings Per Share [Abstract]

Weighted-Average Number of Shares of Common Stock Used to Calculate Basic and Diluted Earnings Per Share

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 March 31,
(in thousands)	2024		2023
Weighted-average number of shares of common stock for calculating basic earnings per share		24,513		24,416
Effect of potentially dilutive securities from equity-based compensation		51		126
Weighted-average number of shares of common stock for calculating diluted earnings per share		24,564		24,542

Discontinued Operations (Tables)

3 Months Ended

Mar. 31, 2024

Discontinued Operations and Disposal Groups [Abstract]

Summary of Results of Discontinued Operations Reported in Consolidated Statements of Income and Balance Sheets

The following table presents the results of Adler Tanks as reported in income from discontinued operations within the condensed consolidated statements of income for the three months ended March 31, 2023:


(dollar amounts in thousands)	Three Months Ended March 31,
	2023
Revenues
Rental	$	6,520
Rental related services		2,584
Rental operations		9,104
Sales		269
Other		65
Total revenues		9,438
Costs and Expenses
Direct costs of rental operations:
Depreciation of rental equipment		1,325
Rental related services		2,020
Other		1,270
Total direct costs of rental operations		4,614
Costs of sales		159
Total costs of revenues		4,773
Gross Profit
Rental		3,926
Rental related services		564
Rental operations		4,490
Sales		110
Other		65
Total gross profit		4,665
Selling and administrative expenses		2,582
Operating income		2,083
Interest expense allocation		(374	)
Income from discontinued operations before provision for income taxes		1,709
Provision for income taxes from discontinued operations		453
Income from discontinued operations	$	1,256

The following table presents the carrying value of the divested business' assets and liabilities as presented within assets and liabilities of discontinued operations on the consolidated balance sheets as of December 31, 2022, which was the most recently audited period prior to divestiture:


	December 31,
(in thousands)	2022
Assets
Accounts receivable, net of allowance for credit losses of $450	$	20,086
Rental equipment, net		137,738
Property, plant and equipment, net		6,632
Prepaid expenses and other assets		191
Intangible assets, net		5,700
Goodwill		25,902
Total assets of discontinued operations	$	196,249
Liabilities
Accounts payable and accrued liabilities	$	9,621
Deferred income taxes, net		43,550
Total liabilities of discontinued operations	$	53,171

Schedule of Operating and Investing Items Related to Discontinued Operations

For the three months ended March 31, 2023, significant operating and investing items related to Adler Tanks were as follows:


	March 31,
(in thousands)	2023
Operating activities of discontinued operations:
Depreciation and amortization	$	1,457
Gain on sale of used rental equipment		(111	)
Investing activities of discontinued operations:
Proceeds from sales of used rental equipment		269
Purchases of rental equipment		(25	)
Purchases of property, plant and equipment		(40	)

Reconciliation of Income from Discontinued Operations to Adjusted EBITDA

The following table presents the reconciliation of income from discontinued operations to Adjusted EBITDA for the three months ended March 31, 2023:


	March 31,
(in thousands)	2023
Income from discontinued operations	$	1,256
Provision for income taxes from discontinued operations		453
Interest expense		374
Depreciation and amortization		1,457
EBITDA		3,540
Share-based compensation		118
Transaction costs		24
Adjusted EBITDA from discontinued operations	$	3,682

- Definition

Tabular disclosure of information related to a disposal group. Includes, but is not limited to, a discontinued operation, disposal classified as held-for-sale or disposed of by means other than sale or disposal of an individually significant component.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-SubTopic 10
-Topic 360
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-3

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
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+ Details

Discontinued Operations

3 Months Ended

Mar. 31, 2024

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

NOTE 5. DISCONTINUED OPERATIONS

On February 1, 2023, the Company completed the sale of Adler Tank Rentals, LLC to Ironclad Environmental Solutions, Inc. ("Ironclad"), a portfolio company of Kinderhook Industries, for a sale price of $268.0 million. The total transaction costs incurred from the divestiture were $8.8 million, with $6.7 million and $2.1 million incurred during the years ended December 31, 2023 and 2022, respectively. The divestiture of the Company's Adler Tanks business represents the Company's strategic shift to concentrate its operations on its core modular and storage businesses. The sale price was subject to certain adjustments, including net working capital, certain qualified capital expenditures and certain transaction expenses to be borne by the Company. In connection with the sale, the Company entered into a number of ancillary agreements, including an escrow agreement associated with net working capital adjustments, a restricted covenant agreement, a transition services agreement, and a number of leases whereby Ironclad or one of its affiliates would be a lessee to certain properties owned by the Company that the Adler Tanks business would continue to utilize after the sale. These ancillary agreements do not provide for continued involvement by the Company in Adler Tanks. In accordance with ASC 205-20, Presentation of Financial Statements - Discontinued Operations and ASC 360, Property, Plant and Equipment, the Company determined that the criteria for the presentation of discontinued operations and held-for-sale, respectively, were met during the first quarter of 2023.


(dollar amounts in thousands)	Three Months Ended March 31,
	2023
Revenues
Rental	$	6,520
Rental related services		2,584
Rental operations		9,104
Sales		269
Other		65
Total revenues		9,438
Costs and Expenses
Direct costs of rental operations:
Depreciation of rental equipment		1,325
Rental related services		2,020
Other		1,270
Total direct costs of rental operations		4,614
Costs of sales		159
Total costs of revenues		4,773
Gross Profit
Rental		3,926
Rental related services		564
Rental operations		4,490
Sales		110
Other		65
Total gross profit		4,665
Selling and administrative expenses		2,582
Operating income		2,083
Interest expense allocation		(374	)
Income from discontinued operations before provision for income taxes		1,709
Provision for income taxes from discontinued operations		453
Income from discontinued operations	$	1,256


	December 31,
(in thousands)	2022
Assets
Accounts receivable, net of allowance for credit losses of $450	$	20,086
Rental equipment, net		137,738
Property, plant and equipment, net		6,632
Prepaid expenses and other assets		191
Intangible assets, net		5,700
Goodwill		25,902
Total assets of discontinued operations	$	196,249
Liabilities
Accounts payable and accrued liabilities	$	9,621
Deferred income taxes, net		43,550
Total liabilities of discontinued operations	$	53,171

For the three months ended March 31, 2023, significant operating and investing items related to Adler Tanks were as follows:


	March 31,
(in thousands)	2023
Operating activities of discontinued operations:
Depreciation and amortization	$	1,457
Gain on sale of used rental equipment		(111	)
Investing activities of discontinued operations:
Proceeds from sales of used rental equipment		269
Purchases of rental equipment		(25	)
Purchases of property, plant and equipment		(40	)

The following table presents the reconciliation of income from discontinued operations to Adjusted EBITDA for the three months ended March 31, 2023:


	March 31,
(in thousands)	2023
Income from discontinued operations	$	1,256
Provision for income taxes from discontinued operations		453
Interest expense		374
Depreciation and amortization		1,457
EBITDA		3,540
Share-based compensation		118
Transaction costs		24
Adjusted EBITDA from discontinued operations	$	3,682

Inventories - Summary of Carrying Value of Inventories (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Inventory Disclosure [Abstract]
Raw materials	$ 4,987	$ 3,806
Work-in-process	19,561	11,619
Inventories	$ 24,548	$ 15,425

Discontinued Operations - Schedule of Assets and Liabilities of Discontinued Operations Reported in Consolidated Balance Sheets (Detail) - Adler Tank Rentals, LLC $ in Thousands	Dec. 31, 2022 USD ($)
Assets
Accounts receivable, net of allowance for credit losses of $450	$ 20,086
Rental equipment, net	137,738
Property, plant and equipment, net	6,632
Prepaid expenses and other assets	191
Intangible assets, net	5,700
Goodwill	25,902
Total assets of discontinued operations	196,249
Liabilities
Accounts payable and accrued liabilities	9,621
Deferred income taxes, net	43,550
Total liabilities of discontinued operations	$ 53,171

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Cash Flows from Operating Activities:
Net income	$ 22,848	$ 71,657
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	27,187	27,590
Deferred income taxes	4,709	(45,496)
Provision for credit losses	253	744
Share-based compensation	2,209	1,493
Gain on sale of property, plant and equipment	(9,281)
Gain on sale of discontinued operations		(58,883)
Gain on sale of used rental equipment	(7,355)	(3,089)
Foreign currency exchange loss (gain)	132	(226)
Amortization of debt issuance costs	2	2
Change in:
Accounts receivable	15,165	16,209
Inventories	(9,123)	(5,313)
Prepaid expenses and other assets	5,298	(2,032)
Accounts payable	9,145	31,559
Accrued liabilities	(13,037)	(1,722)
Deferred income	11,268	3,218
Net cash provided by operating activities	59,420	35,711
Cash Flows from Investing Activities:
Proceeds from sale of discontinued operations		262,454
Purchases of rental equipment	(78,641)	(77,731)
Purchases of property, plant and equipment	(25,277)	(6,857)
Cash paid for acquisition of businesses		(453,592)
Proceeds from sales of used rental equipment	13,554	12,197
Proceeds from sales of property, plant and equipment	12,251
Net cash used in investing activities	(78,113)	(263,529)
Cash Flows from Financing Activities:
Net borrowings under bank lines of credit	35,584	245,033
Taxes paid related to net share settlement of stock awards	(4,082)	(6,086)
Payment of dividends	(11,774)	(11,400)
Net cash provided by financing activities	19,728	227,547
Effect of foreign currency exchange rate changes on cash		4
Net increase (decrease) in cash	1,035	(267)
Cash balance, beginning of period	877	957
Cash balance, end of period	1,912	690
Supplemental Disclosure of Cash Flow Information:
Interest paid, during the period	14,184	7,817
Net income taxes paid, during the period	479	413
Dividends accrued during the period, not yet paid	12,060	11,851
Rental equipment acquisitions, not yet paid	$ 5,795	$ 5,697

Implemented Accounting Pronouncements

3 Months Ended

Mar. 31, 2024

Accounting Changes and Error Corrections [Abstract]

Implemented Accounting Pronouncements

NOTE 3. IMPLEMENTED ACCOUNTING PRONOUNCEMENTS

Effective January 1, 2024, the Company adopted the Accounting Standards Update ("ASU") 2023-01, Leases (Topic 842): Common Control Arrangements, which requires a lessee involved in a common control lease agreement to amortize leasehold improvements over the useful life of the improvements to the common control group, regardless of the lease term, as long as the lessee controls the use of the underlying asset. If the lessor obtains the right to control the use of the underlying asset through a lease with another entity not within the same control group, the amortization period cannot exceed the period of the common control group. Furthermore, the ASU requires the accounting for a transfer between entities under common control through an adjustment to equity when the lessee no longer controls the use of the underlying asset. The adoption of this new guidance did not have a material impact on the Company's consolidated financial statements.

Condensed Consolidated Statements of Shareholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]
Balance at Dec. 31, 2022	$ 803,945	$ 110,080	$ 693,943	$ (78)
Balance, Shares at Dec. 31, 2022		24,388,000
Net income	71,657		71,657
Share-based compensation	1,493	$ 1,493
Common stock issued under stock Plans, net of shares withheld for employee taxes, Shares		78,000
Taxes paid related to net share settlement of stock awards	(6,086)	$ (6,086)
Dividends accrued of $0.475 and $0.465 per share for three months ended March 31, 2024, and three months ended March 31, 2023	(11,453)		(11,453)
Other comprehensive income (loss)	(18)			(18)
Balance at Mar. 31, 2023	859,538	$ 105,487	754,147	(96)
Balance, Shares at Mar. 31, 2023		24,466,000
Balance at Dec. 31, 2023	$ 933,802	$ 111,122	822,796	(116)
Balance, Shares at Dec. 31, 2023	24,496,000	24,496,000
Net income	$ 22,848		22,848
Share-based compensation	2,209	$ 2,209
Common stock issued under stock Plans, net of shares withheld for employee taxes, Shares		45,000
Taxes paid related to net share settlement of stock awards	(4,082)	$ (4,082)
Dividends accrued of $0.475 and $0.465 per share for three months ended March 31, 2024, and three months ended March 31, 2023	(11,824)		(11,824)
Other comprehensive income (loss)	67			67
Balance at Mar. 31, 2024	$ 943,020	$ 109,249	$ 833,820	$ (49)
Balance, Shares at Mar. 31, 2024	24,541,000	24,541,000

- 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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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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+ Details

Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2024

Segment Reporting [Abstract]

Summarized Financial Information for Company's Reportable Segments

Summarized financial information for the three months ended March 31, 2024 and 2023 for the Company’s reportable segments are shown in the following table:


(dollar amounts in thousands)	Mobile Modular			Portable Storage			TRS- RenTelco			Enviroplex1			Consolidated
Three Months Ended March 31,
2024
Rental revenues	$	76,496		$	18,407		$	25,429		$ —			$	120,332
Rental related services revenues		24,133			4,723			724			—			29,580
Sales and other revenues		26,956			1,630			7,610			1,719			37,915
Total revenues		127,585			24,760			33,763			1,719			187,827
Depreciation of rental equipment		9,874			965			11,527			—			22,366
Gross profit		61,845			17,103			13,875			445			93,268
Selling and administrative expenses		40,087			9,010			8,918			1,803			59,818
Other income		(6,220	)		(1,319	)		(1,742	)		—			(9,281	)
Income (loss) from operations		27,978			9,412			6,699			(1,358	)		42,731
Interest (expense) income allocation		(9,799	)		(1,420	)		(2,062	)		577			(12,704	)
Income (loss) before provision for income taxes		18,179			7,992			4,505			(781	)		29,895
Rental equipment acquisitions		59,263			5,128			3,393			—			67,784
Accounts receivable, net (period end)		166,382			14,117			22,637			8,814			211,950
Rental equipment, at cost (period end)		1,345,919			240,517			370,641		—				1,957,077
Rental equipment, net book value (period end)		1,013,965			220,811			133,766		—				1,368,542
Utilization (period end) 2		78.5	%		68.8	%		56.8	%
Average utilization 2		78.7	%		69.8	%		56.5	%
2023
Rental revenues	$	64,056		$	17,057		$	29,134		$ —			$	110,247
Rental related services revenues		21,534			4,718			880			—			27,132
Sales and other revenues		18,337			955			6,106			941			26,339
Total revenues		103,927			22,730			36,120			941			163,718
Depreciation of rental equipment		8,657			787			12,389			—			21,833
Gross profit		46,171			15,451			15,620			125			77,367
Selling and administrative expenses		38,456			8,058			9,451			1,533			57,498
Other income		—			—			—			—			—
Income (loss) from operations		7,715			7,393			6,169			(1,408	)		19,869
Interest (expense) income allocation		(5,387	)		(884	)		(1,742	)		549			(7,464	)
Income (loss) before provision for income taxes		2,328			6,509			4,653			(859	)		12,631
Rental equipment acquisitions		54,448			7,651			10,112			—			72,211
Accounts receivable, net (period end)		135,104			13,776			24,493			3,633			177,006
Rental equipment, at cost (period end)		1,200,869			211,215			401,801		—				1,813,885
Rental equipment, net book value (period end)		901,090			195,074			171,104		—				1,267,268
Utilization (period end) 2		79.5	%		79.8	%		59.0	%
Average utilization 2		79.4	%		80.8	%		59.2	%

Condensed Consolidated Financial Information - Additional Information (Detail) - First-Step Merger [Member] - WillScot Mobile Mini Holdings Corp [Member]	Jan. 28, 2024 USD ($) shares $ / shares
Condensed Financial Statements, Captions [Line Items]
Par value issued and outstanding prior to effective time	$ 0
Business acquisition, per share cash consideration \| $	$ 123
Par value	$ 0.0001
Business acquisition, exchange ratio \| shares	2.8211
Business acquisition, consideration transferred cash percent	60.00%
Business acquisition, consideration transferred stock percent	40.00%

Discontinued Operations - Reconciliation of Income from Discontinued Operations to Adjusted EBITDA (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2023 USD ($)
Discontinued Operations and Disposal Groups [Abstract]
Income from discontinued operations	$ 1,256
Provision for income taxes from discontinued operations	453
Interest expense	374
Depreciation and amortization	1,457
EBITDA	3,540
Share-based compensation	118
Transaction costs	24
Adjusted EBITDA from discontinued operations	$ 3,682

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 10
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-10

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 6.I.7)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479360/740-10-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482659/740-20-45-2

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3A
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483475/205-20-45-3A

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5B
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-5B

Reference 6: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
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-Name Accounting Standards Codification
-Section 50
-Paragraph 5C
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-5C

Reference 7: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 8: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
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-Name Accounting Standards Codification
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Reference 9: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 205
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483499/205-20-50-1

+ Details

- Definition

Amount after tax of income (loss) from a discontinued operation attributable to the parent. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

+ References + Details

Revenue Recognition - Summary of Disaggregates the Company's Revenue by Lease and Non Lease (Detail) - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2024

Mar. 31, 2023

Disaggregation Of Revenue [Line Items]

Leasing revenues

$ 140,200

Total revenues

187,827

$ 163,718

Leasing [Member]

Disaggregation Of Revenue [Line Items]

Leasing revenues

140,165

129,981

Non-lease Rental Related Services [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

9,286

9,700

Non-lease Sales [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

34,796

23,169

Non-lease Other [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

3,580

868

Non-lease Revenues [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

47,662

33,737

Mobile Modular [Member]

Disaggregation Of Revenue [Line Items]

Total revenues

127,585

103,927

Mobile Modular [Member] | Leasing [Member]

Disaggregation Of Revenue [Line Items]

Leasing revenues

94,890

82,003

Mobile Modular [Member] | Non-lease Rental Related Services [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

4,272

4,550

Mobile Modular [Member] | Non-lease Sales [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

25,326

16,967

Mobile Modular [Member] | Non-lease Other [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

3,097

407

Mobile Modular [Member] | Non-lease Revenues [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

32,695

21,924

Portable Storage [Member]

Disaggregation Of Revenue [Line Items]

Total revenues

24,760

22,730

Portable Storage [Member] | Leasing [Member]

Disaggregation Of Revenue [Line Items]

Leasing revenues

19,030

17,656

Portable Storage [Member] | Non-lease Rental Related Services [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

4,391

4,424

Portable Storage [Member] | Non-lease Sales [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

1,212

638

Portable Storage [Member] | Non-lease Other [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

127

Portable Storage [Member] | Non-lease Revenues [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

5,730

5,074

TRS-RenTelco [Member]

Disaggregation Of Revenue [Line Items]

Total revenues

33,763

36,120

TRS-RenTelco [Member] | Leasing [Member]

Disaggregation Of Revenue [Line Items]

Leasing revenues

26,245

30,322

TRS-RenTelco [Member] | Non-lease Rental Related Services [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

623

726

TRS-RenTelco [Member] | Non-lease Sales [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

6,539

4,623

TRS-RenTelco [Member] | Non-lease Other [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

356

449

TRS-RenTelco [Member] | Non-lease Revenues [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

7,518

5,798

Enviroplex [Member]

Disaggregation Of Revenue [Line Items]

Total revenues

^[1]

1,719

941

Enviroplex [Member] | Non-lease Sales [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

1,719

941

Enviroplex [Member] | Non-lease Revenues [Member]

Disaggregation Of Revenue [Line Items]

Total non-lease revenues

$ 1,719

$ 941

[1]	Gross Enviroplex sales revenues were $1,719 and $941 for the three months ended March 31, 2024 and 2023, respectively. There were no inter-segment sales to Mobile Modular in the three months ended March 31, 2024 and 2023, which required elimination in consolidation.

Condensed Consolidated Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Allowance for credit losses	$ 2,819	$ 2,801
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	40,000,000	40,000,000
Common stock, shares issued	24,541,000	24,496,000
Common stock, shares outstanding	24,541,000	24,496,000

Discontinued Operations - Additional information (Detail) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Feb. 01, 2023	Mar. 31, 2023	Dec. 31, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total transaction costs		$ 24
Adler Tank Rentals, LLC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale price	$ 268,000
Total transaction costs	$ 8,800		$ 6,700	$ 2,100

Goodwill and Intangible Assets

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

NOTE 9. GOODWILL AND INTANGIBLE ASSETS

Intangible assets consist of the following:


(dollar amounts in thousands)	Estimated useful life in years	Average remaining life in years	Cost	Accumulated amortization	Net book value
March 31, 2024
Customer relationships	8 to 11	7.5	$73,217	$(19,005)	$54,212
Non-compete agreements	5	3.5	10,556	(3,669)	6,887
Trade name	0.75 to 8	5.0	2,000	(1,250)	750
Total amortizing			85,773	(23,924)	61,849
Trade name - non-amortizing	Indefinite		171	—	171
Total			$85,944	$(23,924)	$62,020

December 31, 2023
Customer relationships	8 to 11	7.8	$73,217	$(17,003)	$56,214
Non-compete agreements	5	3.7	10,556	(3,141)	7,415
Trade name	0.75 to 8	5.3	2,000	(1,212)	788
Total amortizing			85,773	(21,356)	64,417
Trade name - non-amortizing	Indefinite		171	—	171
Total			$85,944	$(21,356)	$64,588

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 with indefinite lives 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 asset’s carrying amount, an impairment loss would be charged to expense in the period identified. The amount of an impairment loss that would be recognized is 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 last conducted a qualitative analysis of its goodwill and intangible assets in the fourth quarter 2023, with no indicators of impairment. In addition, no impairment triggering events occurred during the three months ended March 31, 2024, and there were no changes to the carrying value of goodwill during this period. Determining fair value of a reporting unit is judgmental and involves the use of significant estimates and assumptions. The Company bases 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. Amortization expense in the three months ended March 31, 2024 and 2023, was $2.6 million and $2.3 million, respectively. Based on the carrying values at March 31, 2024 and assuming no subsequent impairment of the underlying assets, the amortization expense is expected to be $7.7 million for the remainder of fiscal year 2024, $10.2 million in 2025, $9.8 million in 2026, $9.6 million in 2027, $8.2 million in 2028 and $4.7 million in 2029.

Goodwill and Intangible Assets - Summary of Intangible Assets (Detail) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023
Finite Lived Intangible Assets [Line Items]
Cost	$ 85,773	$ 85,773
Accumulated amortization	(23,924)	(21,356)
Net book value	61,849	64,417
Indefinite, cost	171	171
Indefinite, net book value	171	171
Total, cost	85,944	85,944
Total, accumulated amortization	(23,924)	(21,356)
Total, net book value	$ 62,020	$ 64,588
Customer Relationships [Member]
Finite Lived Intangible Assets [Line Items]
Average remaining life in years	7 years 6 months	7 years 9 months 18 days
Cost	$ 73,217	$ 73,217
Accumulated amortization	(19,005)	(17,003)
Net book value	$ 54,212	$ 56,214
Customer Relationships [Member] \| Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life in years	8 years	8 years
Customer Relationships [Member] \| Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life in years	11 years	11 years
Non-compete Agreements [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life in years	5 years	5 years
Average remaining life in years	3 years 6 months	3 years 8 months 12 days
Cost	$ 10,556	$ 10,556
Accumulated amortization	(3,669)	(3,141)
Net book value	$ 6,887	$ 7,415
Trade Name [Member]
Finite Lived Intangible Assets [Line Items]
Average remaining life in years	5 years	5 years 3 months 18 days
Cost	$ 2,000	$ 2,000
Accumulated amortization	(1,250)	(1,212)
Net book value	$ 750	$ 788
Trade Name [Member] \| Minimum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life in years	9 months	9 months
Trade Name [Member] \| Maximum [Member]
Finite Lived Intangible Assets [Line Items]
Estimated useful life in years	8 years	8 years

New Accounting Pronouncements

3 Months Ended

Mar. 31, 2024

Accounting Changes and Error Corrections [Abstract]

New Accounting Pronouncements

NOTE 2. NEW ACCOUNTING PRONOUNCEMENTS

In December 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-09, Income Taxes—Improvements to Income Tax Disclosures (Topic 740), which will require Companies to disclose annually the specific categories in income tax rate reconciliations, provide additional information for reconciling items which meet a quantitative threshold, and disaggregate domestic and foreign income or loss from continuing operations. Additionally, this ASU will also require the disclosure of income tax expense or benefit from continuing operations disaggregated by federal, state and foreign. This ASU is effective for fiscal years beginning after December 15, 2024, and applied on a prospective basis. The Company is in the process of evaluating the financial statement impact of this ASU.

In November 2023, the FASB issued Accounting Standards Update (“ASU”) 2023-07, Segment Reporting—Improvements to Reportable Segment Disclosures (Topic 280), which will require public companies to provide more transparency in both quarterly and

annual reports about the expenses they incur from revenue generating reportable business segments. In addition, the ASU requires that a public entity disclose significant segment expenses that are regularly provided to the chief operating decision maker, an amount for other segment items by reportable business segment, including a description of its composition, and the primary measures of a business segment's profit or loss in assessing segment performance. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. The Company is in the process of evaluating the financial statement impact of this ASU.

- Definition

The entire disclosure for change in accounting principle. Includes, but is not limited to, nature, reason, and method of adopting amendment to accounting standards or other change in accounting principle.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 65
-Paragraph 2
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 2
-Subparagraph (d)(2)
-SubTopic 20
-Topic 310
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481925/310-20-65-2

+ Details

Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets

Intangible assets consist of the following:


(dollar amounts in thousands)	Estimated useful life in years	Average remaining life in years	Cost	Accumulated amortization	Net book value
March 31, 2024
Customer relationships	8 to 11	7.5	$73,217	$(19,005)	$54,212
Non-compete agreements	5	3.5	10,556	(3,669)	6,887
Trade name	0.75 to 8	5.0	2,000	(1,250)	750
Total amortizing			85,773	(23,924)	61,849
Trade name - non-amortizing	Indefinite		171	—	171
Total			$85,944	$(23,924)	$62,020

December 31, 2023
Customer relationships	8 to 11	7.8	$73,217	$(17,003)	$56,214
Non-compete agreements	5	3.7	10,556	(3,141)	7,415
Trade name	0.75 to 8	5.3	2,000	(1,212)	788
Total amortizing			85,773	(21,356)	64,417
Trade name - non-amortizing	Indefinite		171	—	171
Total			$85,944	$(21,356)	$64,588

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	Mar. 31, 2024	Apr. 24, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Trading Symbol	MGRC
Security Exchange Name	NASDAQ
Entity Registrant Name	McGRATH RENTCORP
Entity Central Index Key	0000752714
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Small Business	false
Entity Emerging Growth Company	false
Title of 12(b) Security	Common Stock
Entity File Number	000-13292
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	94-2579843
Entity Address, Address Line One	5700 Las Positas Road
Entity Address, City or Town	Livermore
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94551-7800
City Area Code	925
Local Phone Number	606-9200
Entity Common Stock, Shares Outstanding		24,548,743
Document Quarterly Report	true
Document Transition Report	false

Subsequent Event - Additional Information (Detail) - Subsequent Event [Member] - Incremental Credit Facility [Member] - Term Loan [Member] $ in Millions	Apr. 23, 2024 USD ($)
Subsequent Event [Line Items]
Aggregate principal amount	$ 75.0
Repayment of revolving loans issued	$ 75.0

Segment Reporting - Additional Information (Detail)	3 Months Ended
Segment Reporting - Additional Information (Detail)	Mar. 31, 2024 Segment Customer	Mar. 31, 2023 Customer
Segment Reporting Information [Line Items]
Number of reportable segments \| Segment	4
Customer Concentration Risk [Member] \| Sales [Member]
Segment Reporting Information [Line Items]
Number of major customer \| Customer	0	0
Geographic Concentration Risk [Member] \| Sales [Member] \| Foreign Country Customers [Member]
Segment Reporting Information [Line Items]
Revenues from customers	2.00%	3.00%

Discontinued Operations - Schedule of Operating and Investing Items Related to Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating activities of discontinued operations:
Depreciation and amortization		$ 1,457
Investing activities of discontinued operations:
Purchases of rental equipment	$ (78,641)	(77,731)
Purchases of property, plant and equipment	$ (25,277)	(6,857)
Adler Tank Rentals, LLC
Operating activities of discontinued operations:
Depreciation and amortization		1,457
Gain on sale of used rental equipment		(111)
Investing activities of discontinued operations:
Proceeds from sales of used rental equipment		269
Purchases of rental equipment		(25)
Purchases of property, plant and equipment		$ (40)

Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues
Rental	$ 120,332	$ 110,247
Rental related services	29,580	27,132
Rental operations	149,912	137,379
Total revenues	187,827	163,718
Direct costs of rental operations:
Depreciation of rental equipment	22,366	21,833
Rental related services	20,786	19,268
Other	29,010	31,135
Total direct costs of rental operations	72,162	72,236
Costs of sales	22,397	14,115
Total costs of revenues	94,559	86,351
Gross profit	93,268	77,367
Expenses:
Selling and administrative expenses	59,818	57,498
Other income, net	(9,281)
Income from operations	42,731	19,869
Interest expense	12,704	7,464
Foreign currency exchange loss (gain)	132	(226)
Income from continuing operations before provision for income taxes	29,895	12,631
Provision for income taxes from continuing operations	7,047	1,113
Income from continuing operations	22,848	11,518
Discontinued operations:
Income from discontinued operations before provision for income taxes		1,709
Provision for income taxes from discontinued operations		453
Gain on sale of discontinued operations, net of tax		58,883
Income from discontinued operations		60,139
Net income	$ 22,848	$ 71,657
Earnings per share from continuing operations:
Basic	$ 0.93	$ 0.47
Diluted	0.93	0.47
Earnings per share from discontinued operations:
Basic		2.46
Diluted		2.45
Earnings per share:
Basic	0.93	2.93
Diluted	$ 0.93	$ 2.92
Shares used in per share calculation:
Basic	24,513	24,416
Diluted	24,564	24,542
Cash dividends declared per share	$ 0.475	$ 0.465
Sales [Member]
Revenues
Revenues	$ 35,069	$ 23,660
Other [Member]
Revenues
Revenues	$ 2,846	$ 2,679