SEGMENTS - Major Product Categories and Percentage of Consolidated Net Sales (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Product Information [Line Items]
Net sales	$ 380,890	$ 515,276
Sales Revenue, Net \| Product Concentration Risk
Product Information [Line Items]
Percentage of consolidated net sales	100.00%	100.00%
Eliminations
Product Information [Line Items]
Net sales	$ (17,868)	$ (4,386)
Transportation Solutions
Product Information [Line Items]
Net sales	329,048	467,123
Transportation Solutions \| Operating Segments
Product Information [Line Items]
Net sales	346,803	470,428
Transportation Solutions \| Eliminations
Product Information [Line Items]
Net sales	(17,755)	(3,305)
Parts & Services
Product Information [Line Items]
Net sales	51,842	48,153
Parts & Services \| Operating Segments
Product Information [Line Items]
Net sales	51,955	49,234
Parts & Services \| Eliminations
Product Information [Line Items]
Net sales	(113)	(1,081)
New trailers
Product Information [Line Items]
Net sales	$ 233,375	$ 365,338
New trailers \| Sales Revenue, Net \| Product Concentration Risk
Product Information [Line Items]
Percentage of consolidated net sales	61.30%	70.90%
New trailers \| Eliminations
Product Information [Line Items]
Net sales	$ (17,670)	$ (820)
New trailers \| Transportation Solutions \| Operating Segments
Product Information [Line Items]
Net sales	251,045	366,158
New trailers \| Parts & Services \| Operating Segments
Product Information [Line Items]
Net sales	0	0
Used trailers
Product Information [Line Items]
Net sales	$ 1,500	$ 1,344
Used trailers \| Sales Revenue, Net \| Product Concentration Risk
Product Information [Line Items]
Percentage of consolidated net sales	0.40%	0.30%
Used trailers \| Eliminations
Product Information [Line Items]
Net sales	$ 0	$ 0
Used trailers \| Transportation Solutions \| Operating Segments
Product Information [Line Items]
Net sales	0	0
Used trailers \| Parts & Services \| Operating Segments
Product Information [Line Items]
Net sales	1,500	1,344
Components, parts and services
Product Information [Line Items]
Net sales	$ 31,502	$ 35,630
Components, parts and services \| Sales Revenue, Net \| Product Concentration Risk
Product Information [Line Items]
Percentage of consolidated net sales	8.30%	6.90%
Components, parts and services \| Eliminations
Product Information [Line Items]
Net sales	$ 0	$ 0
Components, parts and services \| Transportation Solutions \| Operating Segments
Product Information [Line Items]
Net sales	0	0
Components, parts and services \| Parts & Services \| Operating Segments
Product Information [Line Items]
Net sales	31,502	35,630
Equipment and other
Product Information [Line Items]
Net sales	$ 114,513	$ 112,964
Equipment and other \| Sales Revenue, Net \| Product Concentration Risk
Product Information [Line Items]
Percentage of consolidated net sales	30.10%	21.90%
Equipment and other \| Eliminations
Product Information [Line Items]
Net sales	$ (198)	$ (3,566)
Equipment and other \| Transportation Solutions \| Operating Segments
Product Information [Line Items]
Net sales	95,758	104,270
Equipment and other \| Parts & Services \| Operating Segments
Product Information [Line Items]
Net sales	$ 18,953	$ 12,260