CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
ASSETS
Cash and cash equivalents	$ 18	$ 120
Accounts receivable (Note 2)	134,124	322,630
Derivative asset	367,710	402,668
Prepaid expenses and other	17,137	19,625
Total current assets	518,989	745,043
Proved oil and gas properties	7,606,405	7,348,436
Less - accumulated depletion, depreciation, and amortization	(3,481,836)	(3,233,012)
Unproved oil and gas properties	284,538	532,498
Wells in Progress	387,432	503,734
Oil and gas properties held for sale, net of accumulated depletion, depreciation, and amortization of $0 and $22,482, respectively	641	17,891
Other property and equipment, net of accumulated depreciation of $47,979 and $37,079, respectively	153,100	334,356
Total property and equipment, net	4,950,280	5,503,903
Derivative asset	120,701	189,540
Other noncurrent assets	31,673	44,659
Total other noncurrent assets	152,374	234,199
Total Assets	5,621,643	6,483,145
LIABILITIES
Accounts payable and accrued expenses (note 2)	302,517	640,684
Derivative liability	8	0
Deferred tax liability	0	142,976
Other current liabilities	0	1,000
Total current liabilities	302,525	784,660
Revolving credit facility	202,000	166,000
Senior Notes, net of unamortized deferred financing costs (note 5)	2,315,970	2,166,445	[1]
Asset retirement obligation	137,525	120,867
Net Profits Plan liability	7,611	27,136
Deferred income taxes	758,279	891,681
Derivative liability	0	70
Other noncurrent liabilities	45,332	39,631
Total noncurrent liabilities	$ 3,466,717	$ 3,411,830
Commitments and contingencies (note 6)
STOCKHOLDERS' EQUITY
Common stock, $0.01 par value - authorized: 200,000,000 shares; issued and outstanding: 68,075,700 and 67,463,060 shares, respectively	$ 681	$ 675
Additional paid-in capital	305,607	283,295
Retained earnings	1,559,515	2,013,997
Accumulated other comprehensive loss	(13,402)	(11,312)
Total stockholders' equity	1,852,401	2,286,655
Total Liabilities and Stockholders' Equity	$ 5,621,643	$ 6,483,145

[1] Prior period amounts have been reclassified to conform to the current period presentation on the accompanying balance sheets. Please refer to the section Recently Issued Accounting Standards in Note 1 – Summary of Significant Accounting Policies for additional discussion.