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	$ (137,294)	$ (81,559)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation, depletion and amortization	176,206	143,624
Impairments	1,084	117,908
Accretion of firm transportation obligation	445	584
Derivative contracts:
Net (gains) losses	(7,372)	58,327
Cash settlements, net	72,332	(10,279)
Deferred income tax expense (benefit)	230	(42,452)
Loss (gain) on sales of assets, net	25	(56,775)
Non-cash exploration expense	4,005	6,579
Non-cash interest expense	2,280	2,051
Share-based compensation (equity-classified)	2,106	1,651
Other, net	3	281
Changes in operating assets and liabilities, net	(15,769)	(40,747)
Net cash provided by operating activities	98,281	99,193
Cash flows from investing activities
Capital expenditures – property and equipment	(263,993)	(350,580)
Proceeds from sales of assets, net	(221)	96,632
Net cash used in investing activities	(264,214)	(253,948)
Cash flows from financing activities
Proceeds from issuance of preferred stock, net	0	313,646
Payments made to induce conversion of preferred stock	0	(3,368)
Proceeds from revolving credit facility borrowings	197,000	302,000
Repayment of revolving credit facility borrowings	(20,000)	(453,000)
Debt issuance costs paid	(744)	(151)
Dividends paid on preferred stock	(12,134)	(3,836)
Other, net	0	1,085
Net cash provided by financing activities	164,122	156,376
Net (decrease) increase in cash and cash equivalents	(1,811)	1,621
Cash and cash equivalents – beginning of period	6,252	23,474
Cash and cash equivalents – end of period	4,441	25,095
Cash paid for:
Interest	46,041	47,034
Income taxes	7	100
Non-cash Investing activities:
Changes in accrued liabilities related to capital expenditures	$ (20,570)	$ (858)