CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	4 Months Ended	8 Months Ended	12 Months Ended
	Dec. 31, 2016	Sep. 12, 2016	Dec. 31, 2015	Dec. 31, 2014
Derivatives Settled to Pay Down Revolver	$ 0	$ 51,979	$ 0	$ 0
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	(5,296)	1,054,602	(1,582,961)	(409,592)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Non-Cash Reorganization Items	0	(1,178,302)	0	0
Depreciation, depletion and amortization	11,652	33,582	334,479	300,299
Impairments	0	0	1,397,424	791,809
Accretion of firm transportation obligation	0	317	942	1,301
Derivative contracts:
Net losses (gains)	16,622	8,333	(71,247)	(162,212)
Cash settlements, net	384	48,008	138,169	(7,424)
Deferred income tax benefit	0	0	(4,712)	(135,227)
Loss (gain) on sales of assets, net	49	(1,261)	(41,335)	(120,769)
Non-cash exploration expense	0	6,038	5,759	10,346
Non-cash interest expense	226	22,189	4,749	4,197
Share-based compensation (equity-classified)	81	1,511	4,540	3,627
Other, net	21	(13)	13	94
Changes in operating assets and liabilities:
Accounts receivable, net	10,791	12,273	137,854	(20,169)
Accounts payable and accrued expenses	(3,887)	22,469	(152,553)	27,362
Other assets and liabilities	131	501	(1,818)	(918)
Net cash provided by operating activities	30,774	30,247	169,303	282,724
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(4,812)	(15,359)	(364,844)	(774,139)
Receipts to settle working capital adjustments assumed in acquisition, net	0	0	0	33,712
Proceeds from sales of assets, net	0	224	85,189	313,933
Other Investing Activities, Net	(104)	1,186	0	0
Net cash used in investing activities	(4,916)	(13,949)	(279,655)	(426,494)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from credit facility borrowings	0	75,350	233,000	412,000
Repayment of credit facility borrowings	(50,350)	(119,121)	(98,000)	(583,000)
Proceeds from the issuance of preferred stock, net	0	0	0	313,330
Payments to induce conversion of preferred stock	0	0	0	(4,256)
Debt issuance costs paid	0	(3,011)	(744)	(151)
Proceeds Received from Rights Offering	0	49,943	0	0
Dividends paid on preferred stock	0	0	(18,201)	(12,803)
Other, net	(161)	0	0	1,428
Net cash (used in) provided by financing activities	(50,511)	3,161	116,055	126,548
Net (decrease) increase in cash and cash equivalents	(24,653)	19,459	5,703	(17,222)
Cash and cash equivalents - beginning of period	31,414	11,955	6,252	23,474
Cash and cash equivalents - end of period	6,761	31,414	11,955	6,252
Cash paid for:
Cash paid for interest (net of amounts capitalized)	598	4,331	86,226	84,797
Cash paid for income taxes (net of refunds)	(7)	(35)	(714)	3,612
Payments for Restructuring	525	30,990	0	0
Common Stock Issued in Exchange for Liabilities	0	140,952	0	0
Changes in accrued liabilities related to capital expenditures	$ (997)	$ (11,301)	$ (55,660)	$ (24,715)