CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (in thousands, except share amounts) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 659,147	$ 9,372
Accounts receivable	108,368	151,950
Derivative asset	73,978	54,521
Prepaid expenses and other	8,053	8,799
Total current assets	849,546	224,642
Proved oil and gas properties	4,803,068	5,700,418
Less - accumulated depletion, depreciation, and amortization	(2,589,204)	(2,836,532)
Unproved oil and gas properties	2,483,601	2,471,947
Wells in progress	186,707	235,147
Oil and gas properties held for sale, net	455,943	372,621
Other property and equipment, net of accumulated depreciation of $44,662 and $42,882, respectively	110,005	137,753
Total property and equipment, net	5,450,120	6,081,354
Derivative asset	84,195	67,575
Other noncurrent assets	15,847	19,940
Total other noncurrent assets	100,042	87,515
Total Assets	6,399,708	6,393,511
Liabilities
Accounts payable and accrued expenses	299,676	299,708
Derivative liability	53,809	115,464
Total current liabilities	353,485	415,172
Revolving credit facility	0	0
Senior Notes, net of unamortized deferred financing costs	2,765,714	2,766,719
Senior Convertible Notes, net of unamortized discount and deferred financing costs	132,889	130,856
Asset retirement obligation	83,160	96,134
Asset retirement obligation associated with oil and gas properties held for sale	16,056	26,241
Deferred income taxes	304,331	315,672
Derivative liability	81,306	98,340
Other noncurrent liabilities	47,252	47,244
Total noncurrent liabilities	3,430,708	3,481,206
Commitments and contingencies (note 6)
Stockholders' equity:
Common stock, $0.01 par value - authorized: 200,000,000 shares; issued and outstanding; 111,258,225 and 111,257,500 shares, respectively	1,113	1,113
Additional paid-in-capital	1,723,010	1,716,556
Retained earnings	906,515	794,020
Accumulated other comprehensive loss	(15,123)	(14,556)
Total stockholders' equity	2,615,515	2,497,133
Total Liabilities and Stockholders' Equity	$ 6,399,708	$ 6,393,511