RESTRUCTURING AND IMPAIRMENT COSTS - Schedule of Cumulative Amount of Restructuring and Impairment Costs (Details) - Truckload Transportation Services - One-Way Truckload $ in Thousands	Mar. 31, 2026 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	$ 44,225
Intangible Asset Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	21,735
Revenue Equipment Impairment
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	14,360
Other Revenue Equipment Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	6,643
Current Assets
Restructuring Cost and Reserve [Line Items]
Restructuring and impairment	$ 1,487