Segment Reporting - Summarized Financial Information for Company's Reportable Segments (Parenthetical) (Detail) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022		Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenues		$ 177,031	$ 146,435	$ 322,404		$ 267,630
Sales revenues				54,403		44,605
Sales [Member]
Segment Reporting Information [Line Items]
Sales revenues		36,471	28,256	52,347		42,867
Enviroplex [Member]
Segment Reporting Information [Line Items]
Revenues		4,650	8,122	5,567	[1]	9,356	[1]
Sales revenues	[1]			5,567		9,356
Mobile Modular [Member]
Segment Reporting Information [Line Items]
Revenues		$ 111,377	$ 84,572	202,022		153,220
Sales revenues				35,941		23,067
Operating Segments [Member] | Enviroplex [Member] | Sales [Member]
Segment Reporting Information [Line Items]
Revenues				6,423		10,211
Inter-segment Eliminations [Member] | Mobile Modular [Member]
Segment Reporting Information [Line Items]
Sales revenues				$ 856		$ 855

[1] Gross Enviroplex sales revenues were $6,423 and $10,211 for the six months ended June 30, 2022 and 2021, respectively. There were $856 and $855 inter-segment sales to Mobile Modular in the six months ended June 30, 2022 and 2021, respectively, which required elimination in consolidation.