Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 19,496	$ 11,463
Receivables:
Crude oil and natural gas sales	335,570	378,622
Affiliated parties	62	122
Joint interest and other, net	278,501	232,293
Derivative assets	12,587	93,922
Inventories	92,894	94,151
Prepaid expenses and other	11,765	11,766
Total current assets	750,875	822,339
Net property and equipment, based on successful efforts method of accounting	13,094,683	14,063,328
Noncurrent derivative assets	1,676	14,560
Other noncurrent assets	18,018	19,581
Total assets	13,865,252	14,919,808
Current liabilities:
Accounts payable trade	413,278	553,285
Revenues and royalties payable	173,223	187,000
Payables to affiliated parties	178	69
Accrued liabilities and other	199,694	176,947
Derivative liabilities	13,780	3,583
Current portion of long-term debt	2,197	2,144
Total current liabilities	802,350	923,028
Long-term debt, net of current portion	6,830,141	7,115,644
Other noncurrent liabilities:
Deferred income tax liabilities, net	1,847,947	2,090,228
Asset retirement obligations, net of current portion	104,938	101,251
Noncurrent derivative liabilities	4,299	3,706
Other noncurrent liabilities	14,879	17,051
Total other noncurrent liabilities	1,972,063	2,212,236
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; 374,537,423 shares issued and outstanding at September 30, 2016; 372,959,080 shares issued and outstanding at December 31, 2015	3,745	3,730
Additional paid-in capital	1,363,886	1,345,624
Accumulated other comprehensive loss, net of tax	(2,485)	(3,354)
Retained earnings	2,895,552	3,322,900
Total shareholders’ equity	4,260,698	4,668,900
Total liabilities and shareholders’ equity	$ 13,865,252	$ 14,919,808