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ACQUISITION OF TRANSTAR, INC - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Jul. 28, 2021
Business Acquisition [Line Items]      
Goodwill $ 260,252 $ 257,137  
Transtar, LLC      
Business Acquisition [Line Items]      
Cash and cash equivalents     $ 8,918
Accounts receivable     18,625
Operating lease right-of-use assets     12,231
Property, plant and equipment     487,946
Intangible assets     60,000
Other assets     17,052
Total assets     604,772
Accounts payable and accrued liabilities     47,010
Operating lease liabilities     10,689
Pension and other postretirement benefits     34,698
Other liabilities     8,487
Total liabilities     100,884
Goodwill     132,121
Total purchase consideration     $ 636,009