Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 17,188	$ 16,643
Receivables:
Crude oil and natural gas sales	414,841	404,750
Affiliated parties	52	99
Joint interest and other, net	376,259	364,850
Derivative assets	7,524	4,061
Inventories	98,690	111,987
Prepaid expenses and other	14,952	10,843
Total current assets	929,506	913,233
Net property and equipment, based on successful efforts method of accounting	12,880,357	12,881,227
Noncurrent derivative assets	0	0
Other noncurrent assets	16,197	17,316
Total assets	13,826,060	13,811,776
Current liabilities:
Accounts payable trade	582,565	476,342
Revenues and royalties payable	237,967	217,425
Payables to affiliated parties	62	148
Accrued liabilities and other	164,694	176,770
Derivative liabilities	17,797	59,489
Current portion of long-term debt	2,236	2,219
Total current liabilities	1,005,321	932,393
Long-term debt, net of current portion	6,508,209	6,577,697
Other noncurrent liabilities:
Deferred income tax liabilities, net	1,891,177	1,890,305
Asset retirement obligations, net of current portion	97,151	94,436
Noncurrent derivative liabilities	0	0
Other noncurrent liabilities	14,848	14,949
Total other noncurrent liabilities	2,003,176	1,999,690
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; 375,321,131 shares issued and outstanding at March 31, 2017; 374,492,357 shares issued and outstanding at December 31, 2016	3,753	3,745
Additional paid-in capital	1,376,883	1,375,290
Accumulated other comprehensive loss, net of tax	(122)	(260)
Retained earnings	2,928,840	2,923,221
Total shareholders’ equity	4,309,354	4,301,996
Total liabilities and shareholders’ equity	$ 13,826,060	$ 13,811,776