Summary of Significant Accounting Policies - Summary of Accrued Costs (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Accrued Liabilities, Current [Abstract]
Accrued interest payable	$ 39,096	$ 39,501
Accrued capital expenditures	13,115	42,193
Accrued transportation costs	27,707	28,307
Accrued transaction costs	3,364	10,830
Accrued employee compensation	7,552	8,653
Accrued lease operating expenses	8,695	4,990
Other	3,930	2,692
Total accrued expenses	$ 103,459	$ 137,166