Summary of Significant Accounting Policies (Details Textual) - USD ($)		1 Months Ended	2 Months Ended	3 Months Ended	4 Months Ended	6 Months Ended	8 Months Ended
	Dec. 31, 2016	Apr. 22, 2016	Jun. 30, 2016	Jun. 30, 2017	Apr. 22, 2016	Jun. 30, 2017	Dec. 31, 2016
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	$ 100,000
Accounts receivable, gross	12,600,000			15,900,000		15,900,000	12,600,000
Accounts receivable related to joint interest owners	2,700,000			700,000		700,000	2,700,000
Severance tax receivable	1,600,000			1,400,000		1,400,000	1,600,000
Other receivables	600,000			1,000,000		$ 1,000,000	600,000
Percentage of working interest in wells						100.00%
Prepaid expenses	2,000,000			2,200,000		$ 2,200,000	2,000,000
Inventories carried at cost	400,000			700,000		$ 700,000	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
Equipment 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			$ 1,500,000	1,200,000		$ 2,100,000
Proved oil and gas properties	480,499,000			565,142,000		565,142,000	480,499,000
Unproved oil and gas properties	33,354,000			39,919,000		39,919,000	33,354,000
Furniture, fixtures, and other equipment	3,221,000			3,097,000		3,097,000	3,221,000
Less - Accumulated depreciation, depletion, and amortization	(169,879,000)			(190,379,000)		(190,379,000)	(169,879,000)
Property and Equipment, Net	347,195,000			417,779,000		417,779,000	347,195,000
Write-down of oil and gas properties			133,496,000	0		0
Total amount of supervision fees charged to wells			$ 1,300,000	1,100,000		2,300,000
Trade accounts payable	10,563,000			10,823,000		10,823,000	10,563,000
Accrued operating expenses	2,990,000			2,960,000		2,960,000	2,990,000
Accrued payroll costs	4,730,000			3,575,000		3,575,000	4,730,000
Asset retirement obligation - current portion	9,965,000			8,744,000		8,744,000	9,965,000
Accrued non-income based taxes	3,937,000			4,884,000		4,884,000	3,937,000
Accrued price risk liabilities	17,632,000			3,183,000		3,183,000	17,632,000
Accrued corporate and legal fees	3,075,000			3,397,000		3,397,000	3,075,000
Other payables	3,365,000			4,254,000		4,254,000	3,365,000
Accounts payable and accrued liabilities	$ 56,257,000			$ 41,820,000		$ 41,820,000	$ 56,257,000
Purchase of treasury stock (shares)						21,067	22,485
Predecessor [Member]
Summary of Significant Accounting Policies
Total capitalized internal costs		$ 500,000			$ 2,900,000
Write-down of oil and gas properties		0			77,732,000
Total amount of supervision fees charged to wells		$ 700,000			$ 2,700,000
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