Fresh Start Accounting Fair Value Adjustment of Oil and Gas Properties and Accumulated Depletion, Depreciation and Amortization (Details) $ in Thousands	Apr. 22, 2016 USD ($)
Revaluation of Assets [Member]
Oil and Gas Property [Abstract]
Proved properties	$ (5,441,655)
Unproved properties	33,448
Total Oil and Gas Properties	(5,408,207)
Less - Accumulated depletion and impairments	5,638,741
Net Oil and Gas Properties	230,534
Furniture, Fixtures and other equipment	(40,551)
Less - Accumulated depreciation	37,510
Net Furniture, Fixtures and other equipment	(3,041)
Net Oil and Gas Properties, Furniture and fixtures and accumulated depreciation	227,493
Predecessor [Member]
Oil and Gas Property [Abstract]
Proved properties	5,951,016
Unproved properties	12,057
Total Oil and Gas Properties	5,963,073
Less - Accumulated depletion and impairments	(5,638,741)
Net Oil and Gas Properties	324,332
Furniture, Fixtures and other equipment	44,252
Less - Accumulated depreciation	(37,510)
Net Furniture, Fixtures and other equipment	6,742
Net Oil and Gas Properties, Furniture and fixtures and accumulated depreciation	331,074
Successor [Member]
Oil and Gas Property [Abstract]
Proved properties	509,361
Unproved properties	45,505
Total Oil and Gas Properties	554,866
Less - Accumulated depletion and impairments	0
Net Oil and Gas Properties	554,866
Furniture, Fixtures and other equipment	3,701
Less - Accumulated depreciation	0
Net Furniture, Fixtures and other equipment	3,701
Net Oil and Gas Properties, Furniture and fixtures and accumulated depreciation	$ 558,567