Acquisitions and Divestitures - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands		5 Months Ended
	May 05, 2019	Dec. 31, 2019	Dec. 31, 2020	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Business Acquisition And Divestiture [Line Items]
Common stock, par value		$ 0.01	$ 0.01
Measurement period adjustment amount of increase asset retirement obligations liability		$ 91,089	$ 97,149			$ 76,344
Operating lease - long term right-of-use asset		4,406	2,500
Operating Liabilities		4,432	$ 2,524
ASU 2016-02 [Member]
Business Acquisition And Divestiture [Line Items]
Operating lease - long term right-of-use asset					$ 5,400
Operating Liabilities					$ 5,400
Legacy Amplify, Midstates and Midstates Holdings, Inc. [Member]
Business Acquisition And Divestiture [Line Items]
Merger conversion ratio	0.933
Common stock, par value	$ 0.01
Measurement period adjustment amount of increase asset retirement obligations liability				$ 900
Legacy Amplify, Midstates and Midstates Holdings, Inc. [Member] | ASU 2016-02 [Member]
Business Acquisition And Divestiture [Line Items]
Operating lease - long term right-of-use asset				300
Operating Liabilities				$ 300
Legacy Amplify, Midstates and Midstates Holdings, Inc. [Member] | Oklahoma Properties [Member]
Business Acquisition And Divestiture [Line Items]
Business acquisition, revenues		31,800
Legacy Amplify, Midstates and Midstates Holdings, Inc. [Member] | Direct Operating Expense [Member] | Oklahoma Properties [Member]
Business Acquisition And Divestiture [Line Items]
Business acquisition, expenses		34,000
Legacy Amplify, Midstates and Midstates Holdings, Inc. [Member] | Other Expenses [Member | Oklahoma Properties [Member]
Business Acquisition And Divestiture [Line Items]
Business acquisition, expenses		$ 400