Significant Accounting Policies - Summary of Revenues by Type and by Applicable Accounting Standard (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Revenues	$ 294,671	$ 265,677	$ 567,121	$ 506,109
Topic 842 [Member]
Revenues:
Revenues	213,601	165,751	401,617	310,732
Topic 606 [Member]
Revenues:
Revenues	81,070	99,926	165,504	195,377
Rental Revenues [Member] | Owned Equipment Rentals [Member]
Revenues:
Revenues	193,781	148,005	364,619	277,522
Rental Revenues [Member] | Owned Equipment Rentals [Member] | Topic 842 [Member]
Revenues:
Revenues	193,704	147,894	364,433	277,359
Rental Revenues [Member] | Owned Equipment Rentals [Member] | Topic 606 [Member]
Revenues:
Revenues	77	111	186	163
Rental Revenues [Member] | Re Rent Revenues [Member]
Revenues:
Revenues	7,462	9,206	13,806	16,835
Rental Revenues [Member] | Re Rent Revenues [Member] | Topic 842 [Member]
Revenues:
Revenues	7,462	9,206	13,806	16,835
Ancillary And Other Rental Revenues [Member]
Revenues:
Revenues	26,334	18,400	48,377	34,473
Ancillary And Other Rental Revenues [Member] | Topic 842 [Member]
Revenues:
Revenues	12,435	8,651	23,378	16,538
Ancillary And Other Rental Revenues [Member] | Topic 606 [Member]
Revenues:
Revenues	13,899	9,749	24,999	17,935
Ancillary And Other Rental Revenues [Member] | Delivery and Pick-up [Member]
Revenues:
Revenues	13,899	9,749	24,999	17,935
Ancillary And Other Rental Revenues [Member] | Delivery and Pick-up [Member] | Topic 606 [Member]
Revenues:
Revenues	13,899	9,749	24,999	17,935
Ancillary And Other Rental Revenues [Member] | Other [Member]
Revenues:
Revenues	12,435	8,651	23,378	16,538
Ancillary And Other Rental Revenues [Member] | Other [Member] | Topic 842 [Member]
Revenues:
Revenues	12,435	8,651	23,378	16,538
Total Equipment Rental Revenues [Member]
Revenues:
Revenues	227,577	175,611	426,802	328,830
Total Equipment Rental Revenues [Member] | Topic 842 [Member]
Revenues:
Revenues	213,601	165,751	401,617	310,732
Total Equipment Rental Revenues [Member] | Topic 606 [Member]
Revenues:
Revenues	13,976	9,860	25,185	18,098
Used Equipment Sales [Member]
Revenues:
Revenues	18,833	35,821	40,359	74,675
Used Equipment Sales [Member] | Topic 606 [Member]
Revenues:
Revenues	18,833	35,821	40,359	74,675
New Equipment Sales [Member]
Revenues:
Revenues	21,486	27,633	47,522	50,806
New Equipment Sales [Member] | Topic 606 [Member]
Revenues:
Revenues	21,486	27,633	47,522	50,806
Parts Sales [Member]
Revenues:
Revenues	16,172	16,880	32,231	32,436
Parts Sales [Member] | Topic 606 [Member]
Revenues:
Revenues	16,172	16,880	32,231	32,436
Parts and Services [Member]
Revenues:
Revenues	8,889	8,059	17,023	16,070
Parts and Services [Member] | Topic 606 [Member]
Revenues:
Revenues	8,889	8,059	17,023	16,070
Other [Member]
Revenues:
Revenues	1,714	1,673	3,184	3,292
Other [Member] | Topic 606 [Member]
Revenues:
Revenues	$ 1,714	$ 1,673	$ 3,184	$ 3,292