CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (80,201)	$ (758,566)
Adjustments to reconcile net loss to net cash provided by (used for) operating activities:
Loss on sales and exchange of oil and gas properties	14,103	111,778
Impairment of unproved oil and gas properties	84,144	70,309
Impairment of proved oil and gas properties	24,573	547,101
Depreciation, depletion and amortization	112,410	261,907
Gain on derivative financial instruments	(674)	(1,705)
Settlements of derivative financial instruments	2,120	391
Net gain on extinguishment of debt	(190,116)	(55,586)
Amortization of debt discount, premium and issuance costs	6,413	3,952
Interest paid in-kind	2,576
Deferred income taxes	3,687	(146,118)
Stock-based compensation	3,571	6,061
Excess income taxes from stock-based compensation		1,943
Decrease in accounts receivable	101	25,277
Decrease in other current assets	18	7,292
Decrease in accounts payable and accrued liabilities	(37,443)	(50,560)
Net cash provided by (used for) operating activities	(54,718)	23,476
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(41,142)	(232,896)
Proceeds from asset sales	2,067	102,674
Net cash used for investing activities	(39,075)	(130,222)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings		790,000
Payments to retire debt	(3,388)	(502,815)
Debt and equity issuance costs	(9,928)	(16,201)
Tax withholdings related to restricted stock	(313)	(526)
Excess income taxes from stock-based compensation		(1,943)
Net cash provided by (used for) financing activities	(13,629)	268,515
Net increase (decrease) in cash and cash equivalents	(107,422)	161,769
Cash and cash equivalents, beginning of period	134,006	2,071
Cash and cash equivalents, end of period	$ 26,584	$ 163,840