XML 76 R46.htm IDEA: XBRL DOCUMENT

Oil and Gas Producing Activities - Costs Incurred Related to Oil and Natural Gas Property Acquisition Exploration and Development Activities (Detail) - USD ($) $ in Thousands	5 Months Ended	7 Months Ended	12 Months Ended
	Dec. 31, 2018	Aug. 13, 2018	Dec. 31, 2020	Dec. 31, 2019
Oil and Gas Exploration and Production Industries Disclosures [Abstract]
Property acquisitions	$ 21,013	$ 39,323	$ 0	$ 2,097,451
Exploration and development:
Exploratory leasehold costs	0	0	7,949	0
Development leasehold costs	1,715	2,848	13,022	7,603
Development drilling and completion costs	148,745	90,840	436,074	493,625
Other development costs	13,612	13,871	34,525	9,339
Total capital expenditures	$ 185,085	$ 146,882	$ 491,570	$ 2,608,018