Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 17,190	$ 16,643
Receivables:
Crude oil and natural gas sales	385,975	404,750
Affiliated parties	58	99
Joint interest and other, net	402,391	364,850
Derivative assets	17,809	4,061
Inventories	97,003	111,987
Prepaid expenses and other	13,616	10,843
Total current assets	934,042	913,233
Net property and equipment, based on successful efforts method of accounting	12,921,875	12,881,227
Other noncurrent assets	15,340	17,316
Total assets	13,871,257	13,811,776
Current liabilities:
Accounts payable trade	689,772	476,342
Revenues and royalties payable	238,530	217,425
Payables to affiliated parties	218	148
Accrued liabilities and other	159,391	176,770
Derivative liabilities	4,817	59,489
Current portion of long-term debt	2,250	2,219
Total current liabilities	1,094,978	932,393
Long-term debt, net of current portion	6,553,740	6,577,697
Other noncurrent liabilities:
Deferred income tax liabilities, net	1,853,321	1,890,305
Asset retirement obligations, net of current portion	100,470	94,436
Other noncurrent liabilities	14,413	14,949
Total other noncurrent liabilities	1,968,204	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; 375,206,922 shares issued and outstanding at June 30, 2017; 374,492,357 shares issued and outstanding at December 31, 2016	3,752	3,745
Additional paid-in capital	1,385,233	1,375,290
Accumulated other comprehensive income (loss)	67	(260)
Retained earnings	2,865,283	2,923,221
Total shareholders’ equity	4,254,335	4,301,996
Total liabilities and shareholders’ equity	$ 13,871,257	$ 13,811,776