CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash and cash equivalents – beginning of period	$ 6,761
Cash and cash equivalents – end of period	3,132
Cash flows from operating activities
Net income (loss)	28,407
Derivative contracts:
Share-based compensation (equity-classified)	846
Successor [Member]
Cash and cash equivalents – beginning of period	6,761
Net (decrease) increase in cash and cash equivalents	(3,629)
Cash and cash equivalents – end of period	3,132
Cash paid for:
Interest, net of amounts capitalized	348
Income taxes paid , net of (refunds)	0
Reorganization items, net	634
Non-cash investing and financing activities:
Capital Expenditures, Period Increase (Decrease)	2,262
Derivatives settled to reduce outstanding debt	0
Cash flows from operating activities
Net income (loss)	28,407
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization	9,810
Accretion of firm transportation obligation	0
Derivative contracts:
Net gains	(17,016)
Cash settlements, net	(1,992)
(Gain) loss on sales of assets, net	(65)
Non-cash exploration expense	0
Non-cash interest expense	188
Share-based compensation (equity-classified)	846
Other, net	18
Changes in operating assets and liabilities, net	(10,728)
Net cash provided by operating activities	9,468
Cash flows from investing activities
Capital expenditures	(18,067)
Proceeds from sales of assets, net	0
Net cash used in investing activities	(18,067)
Cash flows from financing activities
Proceeds from credit facility borrowings	7,000
Repayment of credit facility borrowings	(2,000)
Other, net	(30)
Net cash provided by (used in) financing activities	$ 4,970
Predecessor [Member]
Cash and cash equivalents – beginning of period		$ 11,955
Net (decrease) increase in cash and cash equivalents		14,577
Cash and cash equivalents – end of period		26,532
Cash paid for:
Interest, net of amounts capitalized		594
Income taxes paid , net of (refunds)		(35)
Reorganization items, net		0
Non-cash investing and financing activities:
Capital Expenditures, Period Increase (Decrease)		(9,697)
Derivatives settled to reduce outstanding debt		22,860
Cash flows from operating activities
Net income (loss)		(33,473)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation, depletion and amortization		13,812
Accretion of firm transportation obligation		175
Derivative contracts:
Net gains		(4,492)
Cash settlements, net		30,559
(Gain) loss on sales of assets, net		153
Non-cash exploration expense		856
Non-cash interest expense		1,269
Share-based compensation (equity-classified)		(602)
Other, net		(4)
Changes in operating assets and liabilities, net		20,278
Net cash provided by operating activities		28,531
Cash flows from investing activities
Capital expenditures		(14,005)
Proceeds from sales of assets, net		126
Net cash used in investing activities		(13,879)
Cash flows from financing activities
Proceeds from credit facility borrowings		0
Repayment of credit facility borrowings		(75)
Other, net		0
Net cash provided by (used in) financing activities		$ (75)