Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 11,463	$ 24,381
Receivables:
Crude oil and natural gas sales	378,622	552,476
Affiliated parties	122	13,360
Joint interest and other, net	232,293	567,476
Derivative assets	93,922	52,423
Inventories	94,151	102,179
Prepaid Taxes	94	63,266
Prepaid expenses and other	11,672	14,040
Total current assets	822,339	1,389,601
Net property and equipment, based on successful efforts method of accounting	14,063,328	13,635,852
Noncurrent derivative assets	14,560	31,992
Other noncurrent assets	19,581	18,588
Total assets	14,919,808	15,076,033
Current liabilities:
Accounts payable trade	553,285	1,263,724
Revenues and royalties payable	187,000	272,755
Payables to affiliated parties	69	7,305
Accrued liabilities and other	176,947	259,157
Derivative liabilities	3,583	1,645
Current portion of long-term debt	2,144	2,078
Total current liabilities	923,028	1,806,664
Long-term debt, net of current portion	7,115,644	5,926,800
Other noncurrent liabilities:
Deferred income tax liabilities, net	2,090,228	2,286,796
Asset retirement obligations, net of current portion	101,251	75,462
Noncurrent derivative liabilities	3,706	3,109
Other noncurrent liabilities	17,051	9,358
Total other noncurrent liabilities	$ 2,212,236	$ 2,374,725
Commitments and contingencies (Note 10)
Shareholders’ equity:
Preferred stock, $0.01 par value; 25,000,000 shares authorized; no shares issued and outstanding	$ 0	$ 0
Common stock, $0.01 par value; 1,000,000,000 shares authorized; 372,959,080 shares issued and outstanding at December 31, 2015; 372,005,502 shares issued and outstanding at December 31, 2014	3,730	3,720
Additional paid-in capital	1,345,624	1,287,941
Accumulated other comprehensive loss	(3,354)	(385)
Retained earnings	3,322,900	3,676,568
Total shareholders’ equity	4,668,900	4,967,844
Total liabilities and shareholders’ equity	$ 14,919,808	$ 15,076,033