Acquisitions and Divestitures (Details) - USD ($)		1 Months Ended			3 Months Ended
	Jul. 31, 2018	Nov. 30, 2018	Jul. 31, 2018	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018	Mar. 01, 2018	Sep. 29, 2017
Business Acquisition [Line Items]
Capitalized Costs, Proved Properties				$ 700,000	$ 1,000,000	$ 700,000
Asset Retirement Obligation					4,400,000
Business Acquisition, Transaction Costs					500,000
Proceeds from sales of assets, net					1,600,000
Business Acquisition, Pro Forma Revenue						82,456,000
Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax						$ 12,407,000
Business Acquisition, Pro Forma Earnings Per Share, Basic						$ 0.82
Business Acquisition, Pro Forma Earnings Per Share, Diluted						$ 0.82
Second Lien Facility					200,000,000		$ 200,000,000		$ 200,000,000
Hunt Acquisition [Member]
Business Acquisition [Line Items]
Working Capital Adjustments, Net	$ 200,000		$ 200,000		245,000
Capitalized Costs, Proved Properties								$ 82,443,000
Asset Retirement Obligation								356,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net								96,978,000
Net Cash Paid on Date of Acquisition								82,955,000
Other Payments to Acquire Businesses					86,000,000
Cash Paid on Date of Acquisition								84,400,000
Accumulated Costs, net of suspended revenues, for wells in which Hunt elected not to participate								13,778,000
Business Acquisition, Transaction Costs					400,000		$ 100,000	96,978,000
Capitalized Costs, Unproved Properties								$ 16,339,000
Cash Received for Suspended Revenues Attributable to Acquired Properties			1,448,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual				400,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual				$ 200,000
Mid-Continent Divestiture [Member]
Business Acquisition [Line Items]
Working Capital Adjustments, Net	(1,300,000)		$ (1,300,000)
Asset Retirement Obligation					300,000
Proceeds from sales of assets, net	$ 6,200,000				$ 6,000,000
Cash Paid to Buyer in Connection with Final Settlement		$ 500,000
Cash Paid for Suspended Revenues in Connection with FInal Settlement		$ 200,000
Pre-Tax Operating Income Attributable to Assets Sold						$ (800,000)