Revenue Recognition - Summary of Disaggregates the Company's Revenue by Lease and Non Lease (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023		Sep. 30, 2022
Disaggregation Of Revenue [Line Items]
Leasing revenues	$ 147,200		$ 424,600
Total revenues	243,506	$ 200,536	619,692		$ 522,940
Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	143,666	136,518	421,033		381,826
Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	18,915	18,180	45,642		43,769
Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	76,723	45,167	147,021		95,923
Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	4,202	671	5,996		1,422
Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	99,840	64,018	198,659		141,114
Mobile Modular [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	194,882	125,838	485,801		327,860
Mobile Modular [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	113,955	86,428	324,033		240,693
Mobile Modular [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	18,251	10,427	41,133		22,960
Mobile Modular [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	58,867	28,922	115,828		64,113
Mobile Modular [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	3,809	61	4,807		94
Mobile Modular [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	80,927	39,410	161,768		87,167
TRS-RenTelco [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	39,109	38,527	113,074		109,359
TRS-RenTelco [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	29,711	32,265	90,388		92,585
TRS-RenTelco [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	664	684	1,952		1,919
TRS-RenTelco [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	8,341	5,291	19,545		14,031
TRS-RenTelco [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	393	287	1,189		824
TRS-RenTelco [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	9,398	6,262	22,686		16,774
Adler Tanks (Discontinued) [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		26,193	9,438	[1]	70,176	[1]
Adler Tanks (Discontinued) [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		17,825	6,612		48,548
Adler Tanks (Discontinued) [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		7,069	2,557		18,890
Adler Tanks (Discontinued) [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		976	269		2,234
Adler Tanks (Discontinued) [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		323			504
Adler Tanks (Discontinued) [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		8,368	2,826		21,628
Enviroplex [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	9,515	9,978	11,379	[2]	15,545	[2]
Enviroplex [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	9,515	9,978	11,379		15,545
Enviroplex [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	$ 9,515	$ 9,978	$ 11,379		$ 15,545

[1] The financial results of Adler Tanks included in this table are through the date of the business divestiture, which occurred on February 1, 2023.

[2] Gross Enviroplex sales revenues were $11,597 and $16,401 for the nine months ended September 30, 2023 and 2022, respectively. There were $218 inter-segment sales to Mobile Modular in the nine months ended September 30, 2023 and $856 inter-segment sales during the same period in 2022, which required elimination in consolidation.