Acquisitions and Divestitures Acquisitions and Divestitures - Divestiture (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Mar. 30, 2019 USD ($) Boe	Mar. 31, 2020 USD ($) a well location	Mar. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on divestiture		$ 0	$ (32,894)
Pirate Divestiture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture	$ 11,500
Net undeveloped acres (in acres) | a		3,400
Producing wells | well		6
Proved undeveloped locations | location		7
Production per day (in barrels of oil equivalent) | Boe	200
Gain (loss) on divestiture			$ (33,500)