Summary of Significant Accounting Policies (Details Textual) - USD ($)		3 Months Ended		4 Months Ended	8 Months Ended
	Dec. 31, 2016	Mar. 31, 2017	Mar. 31, 2016	Apr. 22, 2016	Dec. 31, 2016	Apr. 19, 2017
Summary of Significant Accounting Policies
Discount rate for estimated future net revenues from proved properties		10.00%
Allowance for doubtful accounts receivable, current	$ 100,000	$ 100,000			$ 100,000
Accounts receivable, gross	12,600,000	12,800,000			12,600,000
Accounts receivable related to joint interest owners	2,700,000	4,600,000			2,700,000
Severance tax receivable	1,600,000	1,800,000			1,600,000
Other receivables	600,000	$ 700,000			600,000
Percentage of working interest in wells		100.00%
Prepaid expenses	2,000,000	$ 1,800,000			2,000,000
Inventories carried at cost	400,000	$ 400,000			400,000
Lease Commitment	8,800,000				8,800,000
Corporate office sub-lease	1,900,000				1,900,000
Corporate office lease term	4.4				4.4
Vehicle Lease commitment subject to capitalization	6,500,000				6,500,000
Minimum [Member]
Summary of Significant Accounting Policies
Estimated useful lives of property		2 years
Maximum [Member]
Summary of Significant Accounting Policies
Estimated useful lives of property		20 years
Successor [Member]
Summary of Significant Accounting Policies
Total capitalized internal costs		$ 900,000
Proved oil and gas properties	480,499,000	512,290,000			480,499,000
Unproved oil and gas properties	33,354,000	34,345,000			33,354,000
Furniture, fixtures, and other equipment	3,221,000	3,082,000			3,221,000
Less - Accumulated depreciation, depletion, and amortization	(169,879,000)	(179,551,000)			(169,879,000)
Property and Equipment, Net	347,195,000	370,166,000			347,195,000
Write-down of oil and gas properties		0
Total amount of supervision fees charged to wells		1,200,000
Trade accounts payable	10,563,000	16,469,000			10,563,000
Accrued operating expenses	2,990,000	2,604,000			2,990,000
Accrued payroll costs	4,730,000	2,105,000			4,730,000
Asset retirement obligation - current portion	9,965,000	9,039,000			9,965,000
Accrued non-income based taxes	3,937,000	3,787,000			3,937,000
Accrued price risk liabilities	17,632,000	6,796,000			17,632,000
Accrued corporate and legal fees	3,075,000	3,410,000			3,075,000
Other payables	3,365,000	3,345,000			3,365,000
Accounts payable and accrued liabilities	$ 56,257,000	$ 47,555,000			$ 56,257,000
Purchase of treasury stock (shares)		8,873			22,485
Predecessor [Member]
Summary of Significant Accounting Policies
Total capitalized internal costs			$ 2,500,000
Write-down of oil and gas properties			77,732,000
Total amount of supervision fees charged to wells			$ 2,000,000
Purchase of treasury stock (shares)				65,170
Equipment [Member] | Minimum [Member]
Summary of Significant Accounting Policies
Equipment and vehicle lease term	2 years
Equipment [Member] | Maximum [Member]
Summary of Significant Accounting Policies
Equipment and vehicle lease term	3 years
New Credit Facility [Member] | Line of Credit [Member]
Summary of Significant Accounting Policies
Line of Credit Facility, Current Borrowing Capacity				$ 320,000,000
New Credit Facility [Member] | Line of Credit [Member] | Subsequent Event [Member]
Summary of Significant Accounting Policies
Line of Credit Facility, Maximum Borrowing Capacity						$ 600,000,000
Line of Credit Facility, Current Borrowing Capacity						$ 330,000,000