Accounts Payable and Accrued Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable	$ 20,200
Accruals for capital expenditures	101,214
Revenue and royalties payable	46,870
Accruals for operating expenses	16,355
Accrued interest	1,784
Derivative settlements	109
Other	10,532
Total accrued liabilities	176,864
Accounts payable and accrued liabilities	$ 197,064
Predecessor
Accounts Payable And Accrued Liabilities [Line Items]
Accounts payable		$ 68,578
Accruals for capital expenditures		48,771
Revenue and royalties payable		29,514
Accruals for operating expenses		14,632
Accrued interest		2,587
Derivative settlements		2,106
Other		4,301
Total accrued liabilities		101,911
Accounts payable and accrued liabilities		$ 170,489