Supplemental Disclosures to the Consolidated Balance Sheet and Condensed Statement of Cash Flows - Summary of Current Accrued Liabilities (Detail) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accrued Liabilities Current [Abstract]
Accrued lease operating expense	$ 8,978	$ 11,794
Accrued commitment fee and other expense	4,404	0
Accrued general and administrative expense	3,349	3,126
Operating lease liability	2,258	1,712
Accrued production and ad valorem tax	2,601	520
Accrued capital expenditures	173	5,515
Asset retirement obligations	424	623
Accrued current income taxes	110	0
Accrued interest payable	26	36
Other	354	32
Accrued liabilities	$ 22,677	$ 23,358