Acquisitions and Divestitures - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands			5 Months Ended	12 Months Ended
	May 05, 2019	May 30, 2018	Dec. 31, 2019	Dec. 31, 2018	Sep. 30, 2019	Jan. 01, 2019	Dec. 31, 2017	May 04, 2017
Business Acquisition And Divestiture [Line Items]
Common stock, par value			$ 0.01	$ 0.0001
Measurement period adjustment amount of increase asset retirement obligations liability			$ 91,089	$ 76,344			$ 100,173	$ 96,127
Operating lease - long term right-of-use asset			4,406	0
Operating Liabilities			4,432
Accounts payable			8,310	2,345				$ 2,890
Disposal Group Not Discontinued Operation [Member]
Business Acquisition And Divestiture [Line Items]
(Gain) loss on sale of properties				3,600
Disposal Group Not Discontinued Operation [Member] | South Texas Divestiture [Member]
Business Acquisition And Divestiture [Line Items]
Total net proceeds from divestitures		$ 17,100
Proceeds from divestitures		18,600
Accounts payable		500
Legal and advisor expenses		$ 900		$ 0
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