Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 25,458	$ 24,381
Receivables:
Crude oil and natural gas sales	545,860	552,476
Affiliated parties	96	13,360
Joint interest and other, net	450,534	567,476
Derivative assets	50,214	52,423
Inventories	100,173	102,179
Deferred and prepaid taxes	13,283	63,266
Prepaid expenses and other	14,695	14,040
Total current assets	1,200,313	1,389,601
Net property and equipment, based on successful efforts method of accounting	14,169,202	13,635,852
Other noncurrent assets	22,015	31,992
Other noncurrent assets	18,321	18,588
Total assets	15,409,851	15,076,033
Current liabilities:
Accounts payable trade	776,966	1,263,724
Revenues and royalties payable	255,166	272,755
Payables to affiliated parties	757	7,305
Accrued liabilities and other	280,231	404,506
Derivative liabilities	339	1,645
Current portion of long-term debt	2,110	2,078
Total current liabilities	1,315,569	1,952,013
Long-term debt, net of current portion	6,988,046	5,926,800
Other noncurrent liabilities:
Deferred income tax liabilities	2,156,268	2,141,447
Asset retirement obligations, net of current portion	82,069	75,462
Noncurrent derivative liabilities	828	3,109
Other noncurrent liabilities	11,044	9,358
Total other noncurrent liabilities	2,250,209	$ 2,229,376
Commitments and contingencies (Note 7)
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; 373,074,092 shares issued and outstanding at June 30, 2015; 372,005,502 shares issued and outstanding at December 31, 2014	3,731	3,720
Additional paid-in capital	1,310,161	1,287,941
Accumulated Other Comprehensive Income (Loss), Net of Tax	(2,865)	(385)
Retained earnings	3,545,000	3,676,568
Total shareholders’ equity	4,856,027	4,967,844
Total liabilities and shareholders’ equity	$ 15,409,851	$ 15,076,033