Summary of Significant Accounting Policies (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Successor [Member]
Property and Equipment
Proved oil and gas properties	$ 510,819
Unproved oil and gas properties	47,603
Furniture, fixtures, and other equipment	3,701
Less - Accumulated depreciation, depletion, and amortization	(146,830)
Net Furniture, Fixtures and other equipment	415,293
Accounts Payable and Accrued Liabilities
Trade accounts payable	13,519
Accrued operating expenses	3,441
Accrued payroll costs	2,919
Asset retirement obligation - current portion	5,058
Accrued taxes	4,028
Accrued price risk liabilities	8,770
Accrued corporate and legal fees	9,922
Other payables	1,039
Total accounts payable and accrued liabilities	$ 48,696
Predecessor [Member]
Property and Equipment
Proved oil and gas properties		$ 5,972,666
Unproved oil and gas properties		18,839
Furniture, fixtures, and other equipment		44,252
Less - Accumulated depreciation, depletion, and amortization		(5,577,854)
Net Furniture, Fixtures and other equipment		457,903
Accounts Payable and Accrued Liabilities
Trade accounts payable		0
Accrued operating expenses		0
Accrued payroll costs		0
Asset retirement obligation - current portion		7,165
Accrued taxes		0
Accrued price risk liabilities		0
Accrued corporate and legal fees		0
Other payables		498
Total accounts payable and accrued liabilities		$ 7,663