Acquisitions (Details) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($) $ / shares		Sep. 30, 2017 USD ($) $ / shares		Nov. 01, 2017 USD ($)	Sep. 29, 2017 USD ($) a	Dec. 31, 2016 USD ($)
Business Acquisition [Line Items]
Earnest Money Deposits	$ 3,205	[1]	$ 3,205	[1]			$ 0
Business Acquisition, Pro Forma Revenue	41,865		130,504
Capitalized Costs, Proved Properties	1,600		1,600
Property, Plant and Equipment, Gross	529,462		529,462				259,377
Asset Retirement Obligation	3,000		3,000
Amount Transferred from Escrow Account						$ 7,100
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax	$ (8,657)		$ 38,947
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares	$ (580)		$ 2,600
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares	$ (580)		$ 2,580
Second Lien Facility	$ 200,000		$ 200,000				$ 0
Devon Acquisition [Member]
Business Acquisition [Line Items]
Acreage, Net | a						19,600
Other Payments to Acquire Businesses			$ 205,000
Escrow Deposit						$ 10,300
Earnest Money Deposits						3,200
Capitalized Costs, Proved Properties						42,795
Capitalized Costs, Unproved Properties						142,817
Property, Plant and Equipment, Gross						8,642
Asset Retirement Obligation						491
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net						193,763
Cash Paid on Date of Acquisition						189,911
Amount Transferred from Escrow Account						7,049
Working Capital Adjustments, Net						(3,197)
Preliminary Purchase Price						193,763
Business Acquisition, Transaction Costs						$ 1,500
Subsequent Event [Member] | Devon Acquisition [Member]
Business Acquisition [Line Items]
Additional working interests					$ 700

[1] 1 Represents amount remaining in the escrow deposit for the Acquisition (see Note 3).