Revenue Recognition - Summary of Disaggregates the Company's Revenue by Lease and Non Lease (Detail) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2023	Mar. 31, 2022
Disaggregation Of Revenue [Line Items]
Leasing revenues		$ 136,600
Total revenues		173,156	$ 145,373
Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		136,593	118,484
Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		12,257	11,386
Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		23,438	15,227
Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		868	276
Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		36,563	26,889
Mobile Modular [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		126,657	90,645
Mobile Modular [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		99,659	74,595
Mobile Modular [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		8,974	5,650
Mobile Modular [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		17,605	10,375
Mobile Modular [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		419	25
Mobile Modular [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		26,998	16,050
TRS-RenTelco [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		36,120	33,491
TRS-RenTelco [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		30,322	29,411
TRS-RenTelco [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		726	551
TRS-RenTelco [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		4,623	3,278
TRS-RenTelco [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		449	251
TRS-RenTelco [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		5,798	4,080
Adler Tanks [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	[1]	9,438	20,320
Adler Tanks [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		6,612	14,478
Adler Tanks [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		2,557	5,185
Adler Tanks [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		269	657
Adler Tanks [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		2,826	5,842
Enviroplex [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	[2]	941	917
Enviroplex [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		941	917
Enviroplex [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		$ 941	$ 917

[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 $941 and $917 for the three months ended March 31, 2023 and 2022, respectively. There were no inter-segment sales to Mobile Modular in the three months ended March 31, 2023 and 2022, which required elimination in consolidation.