Revenue Recognition - Summary of Revenues by Source (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	$ 69,577	$ 60,045	$ 129,997	$ 107,213
Boom Trucks, Knuckle Boom & Truck Cranes [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	38,338	34,304	75,969	61,466
Aerial Platforms [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	9,448	9,192	17,773	15,766
Part Sales [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	7,109	6,911	13,881	13,471
Services [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	1,166	1,180	2,183	2,629
Rough Terrain Cranes [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue		1,505	162	1,645
Rentals [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	5,184	285	5,236	412
Other Equipment [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	7,148	$ 6,668	13,609	$ 11,824
Merchandise Sales and Other [Member]
Revenues From External Customers And Long Lived Assets [Line Items]
Total Revenue	$ 1,184		$ 1,184