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Summary of Significant Accounting Policies - Summary of Accrued Expenses (Detail) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Accrued Liabilities, Current [Abstract]    
Accrued interest payable $ 67,265 $ 39,501
Accrued drilling costs 24,959 42,193
Accrued transportation costs 25,353 26,907
Accrued transaction costs 462 10,830
Accrued employee compensation 7,519 8,653
Accrued lease operating expenses 3,466 4,990
Other 3,995 4,092
Total accrued expenses $ 133,019 $ 137,166