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Basis of Presentation - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impairment of oil and gas properties	$ 0	$ 0	$ 199,900	$ 0	$ 199,908
PPP loan \| PPP loan
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Proceeds from issuance of unsecured debt		$ 2,200
Debt instrument interest rate (as a percent)		1.00%			1.00%
Proved oil And gas properties
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impairment of oil and gas properties			199,000
Unproved oil and gas properties
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Impairment of oil and gas properties			$ 900