CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (56,577)	$ (78,502)
Adjustments to reconcile net loss to net cash provided by (used for) operating activities:
Gain on exchange of oil and gas properties	(740)
Deferred income taxes	4,446	(41,691)
Leasehold impairments, dry hole costs and other exploration costs	7,753	42,229
Impairment of oil and gas properties	22,718	403
Depreciation, depletion and amortization	38,836	91,889
Gain on derivative financial instruments	(656)
Settlements of derivative financial instruments	998
Net (gain) loss on extinguishment of debt	(33,380)	2,735
Amortization of debt discount, premium and issuance costs	1,281	1,061
Stock-based compensation	1,330	1,892
Excess income taxes from stock-based compensation		1,510
Decrease in accounts receivable	4,287	15,081
Decrease in other current assets	109	7,724
Increase (decrease) in accounts payable and accrued liabilities	(21,444)	15,897
Net cash provided by (used for) operating activities	(31,039)	60,228
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(14,185)	(140,397)
Proceeds from asset sales	868
Net cash used for investing activities	(13,317)	(140,397)
CASH FLOWS FROM FINANCING ACTIVITIES:
Borrowings		740,000
Principal payments on debt		(415,000)
Debt issuance costs	(15)	(15,970)
Tax withholdings related to restricted stock	(312)	(526)
Excess income taxes from stock-based compensation		(1,510)
Net cash provided by (used for) financing activities	(327)	306,994
Net increase (decrease) in cash and cash equivalents	(44,683)	226,825
Cash and cash equivalents, beginning of period	134,006	2,071
Cash and cash equivalents, end of period	$ 89,323	$ 228,896