CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (in thousands) - USD ($)	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net loss	$ (134,585,000)	$ (556,798,000)
Adjustments to reconcile net loss to net cash provided by operating activities:
Net (gain) loss on divestiture activity	131,565,000	(3,413,000)
Depletion, depreciation, amortization, and asset retirement obligation liability accretion	425,643,000	619,193,000
Impairment of proved properties	3,806,000	277,834,000
Abandonment and impairment of unproved properties	157,000	5,917,000
Stock-based compensation expense	16,160,000	20,485,000
Net derivative (gain) loss	(89,364,000)	121,086,000
Derivative settlement gain	29,402,000	306,234,000
Amortization of debt discount and deferred financing costs	12,478,000	5,687,000
Non-cash (gain) loss on extinguishment of debt, net	22,000	(15,722,000)
Deferred income taxes	(67,458,000)	(314,770,000)
Plugging and abandonment	(2,095,000)	(5,222,000)
Other, net	4,713,000	(8,857,000)
Changes in current assets and liabilities:
Accounts receivable	21,502,000	1,221,000
Prepaid expenses and other	(8,955,000)	7,652,000
Accounts payable and accrued expenses	21,560,000	(65,166,000)
Accrued derivative settlements	6,046,000	19,651,000
Net cash provided by operating activities	370,597,000	415,012,000
Cash flows from investing activities:
Net proceeds from the sale of oil and gas properties	778,365,000	201,829,000
Capital expenditures	(624,969,000)	(492,794,000)
Acquisition of proved and unproved oil and gas properties	(87,389,000)	(21,853,000)
Acquisition deposit held in escrow	3,000,000	(49,000,000)
Net cash provided by (used in) investing activities	69,007,000	(361,818,000)
Cash flows from financing activities:
Proceeds from credit facility	406,000,000	743,000,000
Repayment of credit facility	(406,000,000)	(945,000,000)
Debt issuance costs related to credit facility	0	(3,132,000)
Net proceeds from Senior Notes	0	492,397,000
Cash paid to repurchase Senior Notes	(2,344,000)	(29,904,000)
Net proceeds from Senior Convertible Notes	0	166,681,000
Cash paid for capped call transactions	0	(24,109,000)
Net proceeds from sale of common stock	1,738,000	533,266,000
Dividends paid	(5,563,000)	(3,404,000)
Other, net	(1,392,000)	(2,341,000)
Net cash provided by (used in) financing activities	(7,561,000)	927,454,000
Net change in cash and cash equivalents	432,043,000	980,648,000
Cash and cash equivalents at beginning of period	9,372,000	18,000
Cash and cash equivalents at end of period	441,415,000	980,666,000
Supplemental schedule of additional cash flow information and non-cash activities:
Cash paid for interest, net of capitalized interest	(124,443,000)	(88,109,000)	[1]
Net cash (paid) refunded for income taxes	(2,800,000)	4,481,000
Changes in capital expenditure accruals and other	2,788,000	(1,287,000)
Value of properties exchanged		733,000
Dividends declared, but not paid	$ 5,581,000	4,343,000
Cash paid to terminate second lien facility		$ 10,000,000

[1] Cash paid for interest, net of capitalized interest for the nine months ended September 30, 2016, does not include the $10.0 million paid to terminate a second lien facility that was no longer necessary to fund acquisition activity.