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	Sep. 30, 2020	Dec. 31, 2019
Accrued Liabilities Current [Abstract]
Accrued lease operating expense	$ 9,050	$ 11,794
Accrued general and administrative expense	3,314	3,126
Operating lease liability	2,227	1,712
Accrued ad valorem tax	2,348	520
Accrued capital expenditures	1,499	5,515
Asset retirement obligations	357	623
Accrued interest payable	27	36
Other	241	32
Accrued liabilities	$ 19,063	$ 23,358