Supplemental Disclosures to the Unaudited Condensed Consolidated Balance Sheets and Unaudited Condensed Consolidated Statements of Cash Flows - Summary of Current Accrued Liabilities (Detail) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Accrued Liabilities Current [Abstract]
Accrued lease operating expense	$ 7,725	$ 8,978
Accrued capital expenditures	5,376	173
Accrued commitment fee and other expense	3,719	4,404
Accrued production and ad valorem tax	3,612	2,601
Accrued general and administrative expense	3,051	3,349
Operating lease liability	1,480	2,258
Asset retirement obligations	747	424
Accrued current income taxes	0	110
Other	350	380
Accrued liabilities	$ 26,060	$ 22,677