Revenue Recognition - Summary of Disaggregates the Company's Revenue by Lease and Non Lease (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023		Jun. 30, 2022
Disaggregation Of Revenue [Line Items]
Leasing revenues	$ 140,800		$ 277,400
Total revenues	203,030	$ 177,031	376,186		$ 322,404
Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	140,756	126,824	277,367		245,307
Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	14,471	14,202	26,728		25,589
Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	46,860	35,529	70,298		50,757
Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	943	476	1,793		751
Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	62,274	50,207	98,819		77,097
Mobile Modular [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	164,262	111,377	290,919		202,022
Mobile Modular [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	110,419	79,671	210,078		154,265
Mobile Modular [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	13,908	6,883	22,882		12,533
Mobile Modular [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	39,356	24,816	56,961		35,191
Mobile Modular [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	579	7	998		33
Mobile Modular [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	53,843	31,706	80,841		47,757
TRS-RenTelco [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	37,845	37,341	73,965		70,832
TRS-RenTelco [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues	30,337	30,909	60,677		60,319
TRS-RenTelco [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	563	683	1,289		1,235
TRS-RenTelco [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	6,581	5,462	11,204		8,741
TRS-RenTelco [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	364	287	795		537
TRS-RenTelco [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	7,508	6,432	13,288		10,513
Adler Tanks [Member]
Disaggregation Of Revenue [Line Items]
Total revenues		23,663	9,438		43,983
Adler Tanks [Member] | Leasing [Member]
Disaggregation Of Revenue [Line Items]
Leasing revenues		16,244	6,612		30,723
Adler Tanks [Member] | Non-lease Rental Related Services [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		6,636	2,557		11,821
Adler Tanks [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		601	269		1,258
Adler Tanks [Member] | Non-lease Other [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		182			181
Adler Tanks [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues		7,419	2,826		13,260
Enviroplex [Member]
Disaggregation Of Revenue [Line Items]
Total revenues	923	4,650	1,864	[1]	5,567	[1]
Enviroplex [Member] | Non-lease Sales [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	923	4,650	1,864		5,567
Enviroplex [Member] | Non-lease Revenues [Member]
Disaggregation Of Revenue [Line Items]
Total non-lease revenues	$ 923	$ 4,650	$ 1,864		$ 5,567

[1] Gross Enviroplex sales revenues were $1,871 and $6,423 for the six months ended June 30, 2023 and 2022, respectively. There were $7 inter-segment sales to Mobile Modular in the six months ended June 30, 2023 and $856 inter-segment sales during the same period in 2022, which required elimination in consolidation.