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Accounts Payable and Accrued Liabilities (Details) - USD ($)
$ in Thousands
Sep. 30, 2019
Dec. 31, 2018
Payables and Accruals [Abstract]    
Accounts payable $ 17,445 $ 28,045
Accrued compensation 24,761 30,822
Accrued property and other taxes 20,082 16,301
Accrued severance and other charges 499 2,328
Income taxes 17,619 12,075
Affiliated 679 3,915
Accrued purchase orders and other 35,370 30,495
Total accounts payable and accrued liabilities $ 116,455 $ 123,981