Acquisitions and Divestitures (Details) $ / shares in Units, $ in Thousands	1 Months Ended		3 Months Ended			12 Months Ended
	Mar. 31, 2018 USD ($) a		Mar. 31, 2018 USD ($) a $ / shares		Mar. 31, 2017 USD ($) $ / shares	Dec. 31, 2017 USD ($)	Mar. 01, 2018 USD ($)	Feb. 28, 2018 USD ($)	Nov. 01, 2017 USD ($)	Sep. 29, 2017 USD ($) a
Business Acquisition [Line Items]
Proceeds from sales of assets, net			$ 1,551		$ 0
Earnest Money Deposits	$ 0	[1]	0	[1]		$ 3,210
Business Acquisition, Pro Forma Revenue			82,456		47,721
Capitalized Costs, Proved Properties	700		700		600
Property, Plant and Equipment, Gross	776,171		776,171			590,375
Asset Retirement Obligation	3,800		3,800
Amount Transferred from Escrow Account								$ 2,500
Escrow Distributed								$ 700
Cash Received for Suspended Revenues Attributable to Acquired Properties			355
Amount Transferred from Escrow Account										$ 7,100
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax			$ 13,390		$ 28,189
Business Acquisition, Pro Forma Earnings Per Share, Basic | $ / shares			$ 890		$ 1,880
Business Acquisition, Pro Forma Earnings Per Share, Diluted | $ / shares			$ 890		$ 1,860
Second Lien Facility	200,000		$ 200,000			200,000				$ 200,000
Business Acquisition, Transaction Costs	500		$ 500
Hunt Acquisition [Domain]
Business Acquisition [Line Items]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 0
Acreage, Net | a	9,700		9,700
Other Payments to Acquire Businesses			$ 86,000
Capitalized Costs, Proved Properties							$ 82,198
Capitalized Costs, Unproved Properties							16,339
Asset Retirement Obligation							356
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net							98,181
Cash Paid on Date of Acquisition							84,403
Accumulated Costs, net of suspended revenues, for wells in which Hunt elected not to participate							13,778
Business Acquisition, Transaction Costs	$ 400		400			100	98,181
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual	$ 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
Additional working interests									$ 700
Capitalized Costs, Proved Properties							42,866
Capitalized Costs, Unproved Properties							146,686
Property, Plant and Equipment, Gross							8,642
Asset Retirement Obligation							494
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net							197,345
Cash Paid on Date of Acquisition							190,277			189,900
Amount Transferred from Escrow Account							9,519
Cash Received for Suspended Revenues Attributable to Acquired Properties			$ 300
Working Capital Adjustments, Net							(2,451)
Preliminary Purchase Price							$ 197,345
Business Acquisition, Transaction Costs										$ 1,000

[1] Represents the amount remaining in the Escrow Account for the Devon Acquisition which was utilized to fund the remaining liabilities due to Devon for the final settlement in March 2018 (see Note 3).