CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (791,989)	$ (85,743)
Adjustments to reconcile net loss to net cash provided by operating activities:
Losses (gains) on commodity derivative contracts - net	(2,079)	54,140
Net cash received (paid) for commodity derivative contracts not designated as hedging instruments	94,797	(31,948)
Asset retirement accretion	835	929
Depreciation, depletion, and amortization	113,683	137,975
Impairment in carrying value of oil and gas properties	673,056	86,471
Share-based compensation, net of amounts capitalized to oil and gas properties	2,897	3,668
Deferred income taxes	(9,041)	(2,311)
Amortization of deferred financing costs	8,356	4,197
Paid-in-kind interest expense	1,187
Amortization of deferred gain on debt restructuring	(1,775)
Transaction costs for debt restructuring	34,398
Change in operating assets and liabilities:
Accounts receivable - oil and gas sales	139	(998)
Accounts receivable - JIB and other	22,617	(1,557)
Other current and noncurrent assets	(1,275)	(1,094)
Accounts payable	(2,793)	4,756
Accrued liabilities	(4,058)	4,365
Other	(305)	711
Net cash provided by operating activities	138,650	173,561
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in property and equipment	(190,278)	(275,547)
Proceeds from the sale of oil and gas properties	40,284	147,519
Net cash used in investing activities	(149,994)	(128,028)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from second lien notes	625,000
Proceeds from revolving credit facility	33,000	84,000
Repayment of revolving credit facility	(468,150)	(131,000)
Deferred financing costs	(4,199)	(545)
Transaction costs for debt restructuring	(34,398)
Acquisition of treasury stock	(429)	(1,491)
Net cash provided by (used in) financing activities	150,824	(49,036)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	139,480	(3,503)
Cash and cash equivalents, beginning of period	11,557	33,163
Cash and cash equivalents, end of period	151,037	29,660
SUPPLEMENTAL INFORMATION:
Non-cash investment in property and equipment	61,728	115,000
Non-cash exchange of third lien notes for 2020 senior notes and 2021 senior notes	524,121
Cash paid for interest, net of capitalized interest of $2.1 million and $8.0 million, respectively	$ 71,569	$ 63,383