Revenue Recognition - Summary of Disaggregates the Company's Revenue by Lease and Non Lease (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Disaggregation Of Revenue [Line Items]
Leasing revenues		$ 147,900
Total revenues		195,416	$ 187,827
Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		147,920	140,165
Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		8,698	9,286
Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		38,369	34,796
Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		429	3,580
Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		47,496	47,662
Mobile Modular [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		131,919	127,585
Mobile Modular [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		104,764	94,890
Mobile Modular [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		4,629	4,272
Mobile Modular [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		22,490	25,326
Mobile Modular [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		36	3,097
Mobile Modular [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		27,155	32,695
Portable Storage [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		21,265	24,760
Portable Storage [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		16,592	19,030
Portable Storage [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		3,389	4,391
Portable Storage [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		1,244	1,212
Portable Storage [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		40	127
Portable Storage [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		4,673	5,730
TRS-RenTelco [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		35,019	33,763
TRS-RenTelco [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		26,564	26,245
TRS-RenTelco [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		680	623
TRS-RenTelco [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		7,422	6,539
TRS-RenTelco [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		353	356
TRS-RenTelco [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		8,455	7,518
Enviroplex [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	[1]	7,213	1,719
Enviroplex [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		7,213	1,719
Enviroplex [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		$ 7,213	$ 1,719

[1] Gross Enviroplex sales revenues were $7,213 and $1,719 for the three months ended March 31, 2025 and 2024, respectively. There were no inter-segment sales to Mobile Modular in the three months ended March 31, 2025 and $1,845 inter-segment sales to Mobile Modular for the same period in 2024, which required elimination in consolidation.