ACQUISITION OF TRANSTAR, INC - Property, Plant, and Equipment Acquired (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 28, 2021	Dec. 31, 2022	Dec. 31, 2021
Business Acquisition [Line Items]
Property, plant, and equipment, net		$ 1,673,808	$ 1,517,594
Transtar, LLC
Business Acquisition [Line Items]
Property, plant, and equipment, net	$ 487,946
Transtar, LLC | Railcars
Business Acquisition [Line Items]
Property, plant, and equipment, net	111,359
Transtar, LLC | Track and track related assets
Business Acquisition [Line Items]
Property, plant, and equipment, net	90,904
Transtar, LLC | Land, site improvements and rights
Business Acquisition [Line Items]
Property, plant, and equipment, net	87,450
Transtar, LLC | Bridges and tunnels
Business Acquisition [Line Items]
Property, plant, and equipment, net	173,896
Transtar, LLC | Buildings and improvements
Business Acquisition [Line Items]
Property, plant, and equipment, net	12,448
Transtar, LLC | Railroad equipment
Business Acquisition [Line Items]
Property, plant, and equipment, net	2,725
Transtar, LLC | Terminal machinery and equipment
Business Acquisition [Line Items]
Property, plant, and equipment, net	3,325
Transtar, LLC | Vehicles
Business Acquisition [Line Items]
Property, plant, and equipment, net	3,740
Transtar, LLC | Construction in progress
Business Acquisition [Line Items]
Property, plant, and equipment, net	1,928
Transtar, LLC | Computer hardware and software
Business Acquisition [Line Items]
Property, plant, and equipment, net	$ 171
Minimum | Railcars
Business Acquisition [Line Items]
Estimated remaining useful life in years		40 years
Minimum | Track and track related assets
Business Acquisition [Line Items]
Estimated remaining useful life in years		15 years
Minimum | Railroad equipment
Business Acquisition [Line Items]
Estimated remaining useful life in years		3 years
Minimum | Vehicles
Business Acquisition [Line Items]
Estimated remaining useful life in years		5 years
Minimum | Transtar, LLC | Railcars
Business Acquisition [Line Items]
Estimated remaining useful life in years	1 year
Minimum | Transtar, LLC | Track and track related assets
Business Acquisition [Line Items]
Estimated remaining useful life in years	1 year
Minimum | Transtar, LLC | Bridges and tunnels
Business Acquisition [Line Items]
Estimated remaining useful life in years	15 years
Minimum | Transtar, LLC | Buildings and improvements
Business Acquisition [Line Items]
Estimated remaining useful life in years	3 years
Minimum | Transtar, LLC | Railroad equipment
Business Acquisition [Line Items]
Estimated remaining useful life in years	2 years
Minimum | Transtar, LLC | Terminal machinery and equipment
Business Acquisition [Line Items]
Estimated remaining useful life in years	2 years
Minimum | Transtar, LLC | Vehicles
Business Acquisition [Line Items]
Estimated remaining useful life in years	2 years
Minimum | Transtar, LLC | Computer hardware and software
Business Acquisition [Line Items]
Estimated remaining useful life in years	2 years
Maximum | Railcars
Business Acquisition [Line Items]
Estimated remaining useful life in years		50 years
Maximum | Track and track related assets
Business Acquisition [Line Items]
Estimated remaining useful life in years		50 years
Maximum | Railroad equipment
Business Acquisition [Line Items]
Estimated remaining useful life in years		15 years
Maximum | Vehicles
Business Acquisition [Line Items]
Estimated remaining useful life in years		7 years
Maximum | Transtar, LLC | Railcars
Business Acquisition [Line Items]
Estimated remaining useful life in years	40 years
Maximum | Transtar, LLC | Track and track related assets
Business Acquisition [Line Items]
Estimated remaining useful life in years	40 years
Maximum | Transtar, LLC | Bridges and tunnels
Business Acquisition [Line Items]
Estimated remaining useful life in years	55 years
Maximum | Transtar, LLC | Buildings and improvements
Business Acquisition [Line Items]
Estimated remaining useful life in years	25 years
Maximum | Transtar, LLC | Railroad equipment
Business Acquisition [Line Items]
Estimated remaining useful life in years	15 years
Maximum | Transtar, LLC | Terminal machinery and equipment
Business Acquisition [Line Items]
Estimated remaining useful life in years	15 years
Maximum | Transtar, LLC | Vehicles
Business Acquisition [Line Items]
Estimated remaining useful life in years	5 years
Maximum | Transtar, LLC | Computer hardware and software
Business Acquisition [Line Items]
Estimated remaining useful life in years	5 years