CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (in thousands, except share amounts) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016
Assets
Cash and cash equivalents	$ 559,521		$ 9,372
Accounts receivable	105,713		151,950
Derivative asset	85,962		54,521
Prepaid expenses and other	18,121		8,799
Total current assets	769,317		224,642
Proved oil and gas properties	5,631,013		5,700,418
Less - accumulated depletion, depreciation, and amortization	(3,117,983)		(2,836,532)
Unproved oil and gas properties	2,418,984		2,471,947
Wells in progress	286,682		235,147
Oil and gas properties held for sale, net	18,739		372,621
Other property and equipment, net of accumulated depreciation of $47,738 and $42,882, respectively	108,976		137,753
Total property and equipment, net	5,346,411		6,081,354
Derivative asset	82,194		67,575
Other noncurrent assets	14,683		19,940
Total other noncurrent assets	96,877		87,515
Total Assets	6,212,605		6,393,511
Liabilities
Accounts payable and accrued expenses	311,476		299,708
Derivative liability	36,296		115,464
Total current liabilities	347,772		415,172
Revolving credit facility	0		0
Senior Notes, net of unamortized deferred financing costs	2,767,030		2,766,719
Senior Convertible Notes, net of unamortized discount and deferred financing costs	134,918		130,856
Asset retirement obligation	100,304		96,134
Asset retirement obligation associated with oil and gas properties held for sale	234		26,241
Deferred income taxes	245,506		315,672
Derivative liability	69,915		98,340
Other noncurrent liabilities	45,098		47,244
Total noncurrent liabilities	3,363,005		3,481,206
Commitments and contingencies (note 6)
Stockholders' equity:
Common stock, $0.01 par value - authorized: 200,000,000 shares; issued and outstanding; 111,453,476 and 111,257,500 shares, respectively	1,115		1,113
Additional paid-in capital	1,729,104		1,716,556
Retained earnings	786,608		794,020
Accumulated other comprehensive loss	(14,999)		(14,556)
Total stockholders' equity	2,501,828		2,497,133
Total Liabilities and Stockholders' Equity	$ 6,212,605		$ 6,393,511