Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 16,560	$ 11,463
Receivables:
Crude oil and natural gas sales	385,483	378,622
Affiliated parties	96	122
Joint interest and other, net	260,784	232,293
Derivative assets	16,693	93,922
Inventories	102,896	94,151
Prepaid expenses and other	14,700	11,766
Total current assets	797,212	822,339
Net property and equipment, based on successful efforts method of accounting	13,541,129	14,063,328
Noncurrent derivative assets	3,045	14,560
Other noncurrent assets	18,350	19,581
Total assets	14,359,736	14,919,808
Current liabilities:
Accounts payable trade	412,851	553,285
Revenues and royalties payable	186,258	187,000
Payables to affiliated parties	185	69
Accrued liabilities and other	192,359	176,947
Derivative liabilities	24,227	3,583
Current portion of long-term debt	2,179	2,144
Total current liabilities	818,059	923,028
Long-term debt, net of current portion	7,149,279	7,115,644
Other noncurrent liabilities:
Deferred income tax liabilities, net	1,896,238	2,090,228
Asset retirement obligations, net of current portion	105,277	101,251
Noncurrent derivative liabilities	9,290	3,706
Other noncurrent liabilities	14,644	17,051
Total other noncurrent liabilities	2,025,449	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; 374,581,304 shares issued and outstanding at June 30, 2016; 372,959,080 shares issued and outstanding at December 31, 2015	3,746	3,730
Additional paid-in capital	1,360,933	1,345,624
Accumulated other comprehensive loss, net of tax	(2,903)	(3,354)
Retained earnings	3,005,173	3,322,900
Total shareholders’ equity	4,366,949	4,668,900
Total liabilities and shareholders’ equity	$ 14,359,736	$ 14,919,808