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	12
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.