Organization and Nature of Operations (Details) - USD ($) $ / shares in Units, $ in Millions		6 Months Ended
	Apr. 20, 2017	Jun. 30, 2017	Dec. 31, 2016
Common Stock, Class B
Organization And Nature Of Operations [Line Items]
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common Stock, Class A
Organization And Nature Of Operations [Line Items]
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common Stock | Common Stock, Class A
Organization And Nature Of Operations [Line Items]
Issuance of Class A Common Stock		66,700,000
Double Eagle Acquisition [Member]
Organization And Nature Of Operations [Line Items]
Payments to Acquire Oil and Gas Property	$ 1,394.7
Double Eagle Acquisition [Member] | PE Units [Member]
Organization And Nature Of Operations [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Shares	39,848,518
Double Eagle Acquisition [Member] | Common Stock | Common Stock, Class B
Organization And Nature Of Operations [Line Items]
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable, Shares	39,848,518