SEGMENTS - Major Product Categories and Percentage of Consolidated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Product Information [Line Items]
Net sales	$ 416,814	$ 464,040	$ 550,610	$ 515,276	$ 596,100	$ 632,828	$ 686,620	$ 620,952	$ 657,449	$ 655,150	$ 642,769	$ 546,761	$ 1,946,740	$ 2,536,500	$ 2,502,129
New trailers
Product Information [Line Items]
Net sales													1,331,924	1,918,799	2,012,864
Used trailers
Product Information [Line Items]
Net sales													4,012	4,978	2,905
Components, parts and services
Product Information [Line Items]
Net sales													128,565	148,256	139,762
Equipment and other
Product Information [Line Items]
Net sales													482,239	464,467	346,598
Transportation Solutions
Product Information [Line Items]
Net sales													1,747,039	2,320,274	2,312,637
Parts & Services
Product Information [Line Items]
Net sales													199,701	216,226	189,492
Operating Segments \| Transportation Solutions
Product Information [Line Items]
Net sales													1,755,133	2,338,604	2,320,914
Operating Segments \| Transportation Solutions \| New trailers
Product Information [Line Items]
Net sales													1,335,902	1,924,700	2,012,428
Operating Segments \| Transportation Solutions \| Used trailers
Product Information [Line Items]
Net sales													71	0	0
Operating Segments \| Transportation Solutions \| Components, parts and services
Product Information [Line Items]
Net sales													0	0	0
Operating Segments \| Transportation Solutions \| Equipment and other
Product Information [Line Items]
Net sales													419,160	413,904	308,486
Operating Segments \| Parts & Services
Product Information [Line Items]
Net sales													205,062	220,873	193,476
Operating Segments \| Parts & Services \| New trailers
Product Information [Line Items]
Net sales													0	0	1,722
Operating Segments \| Parts & Services \| Used trailers
Product Information [Line Items]
Net sales													4,012	4,978	2,905
Operating Segments \| Parts & Services \| Components, parts and services
Product Information [Line Items]
Net sales													128,565	148,256	139,762
Operating Segments \| Parts & Services \| Equipment and other
Product Information [Line Items]
Net sales													72,485	67,639	49,087
Intersegment sales
Product Information [Line Items]
Net sales													(13,455)	(22,977)	(12,261)
Intersegment sales \| New trailers
Product Information [Line Items]
Net sales													(3,978)	(5,901)	(1,286)
Intersegment sales \| Used trailers
Product Information [Line Items]
Net sales													(71)	0	0
Intersegment sales \| Components, parts and services
Product Information [Line Items]
Net sales													0	0	0
Intersegment sales \| Equipment and other
Product Information [Line Items]
Net sales													(9,406)	(17,076)	(10,975)
Intersegment sales \| Transportation Solutions
Product Information [Line Items]
Net sales													(8,094)	(18,330)	(8,277)
Intersegment sales \| Parts & Services
Product Information [Line Items]
Net sales													$ (5,361)	$ (4,647)	$ (3,984)
Product Concentration Risk \| Sales revenue, net
Product Information [Line Items]
Percentage of consolidated net sales													100.00%	100.00%	100.00%
Product Concentration Risk \| New trailers \| Sales revenue, net
Product Information [Line Items]
Percentage of consolidated net sales													68.40%	75.70%	80.40%
Product Concentration Risk \| Used trailers \| Sales revenue, net
Product Information [Line Items]
Percentage of consolidated net sales													0.20%	0.20%	0.10%
Product Concentration Risk \| Components, parts and services \| Sales revenue, net
Product Information [Line Items]
Percentage of consolidated net sales													6.60%	5.80%	5.60%
Product Concentration Risk \| Equipment and other \| Sales revenue, net
Product Information [Line Items]
Percentage of consolidated net sales													24.80%	18.30%	13.90%