Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 129,989	$ 43,902
Receivables:
Crude oil and natural gas sales	671,004	671,665
Affiliated parties	58	63
Joint interest and other, net	506,301	426,585
Derivative assets	203	2,603
Inventories	115,310	97,406
Prepaid expenses and other	18,424	9,501
Total current assets	1,441,289	1,251,725
Net property and equipment, based on successful efforts method of accounting	13,339,571	12,933,789
Other noncurrent assets	17,620	14,137
Total assets	14,798,480	14,199,651
Current liabilities:
Accounts payable trade	811,965	692,908
Revenues and royalties payable	380,651	374,831
Payables to affiliated parties	237	143
Accrued liabilities and other	280,199	260,074
Derivative liabilities	9,065	0
Current portion of long-term debt	2,322	2,286
Total current liabilities	1,484,439	1,330,242
Long-term debt, net of current portion	6,164,221	6,351,405
Other noncurrent liabilities:
Deferred income tax liabilities, net	1,406,326	1,259,558
Asset retirement obligations, net of current portion	117,924	111,794
Other noncurrent liabilities	12,082	15,449
Total other noncurrent liabilities	1,536,332	1,386,801
Commitments and contingencies (Note 8)
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; 376,030,797 shares issued and outstanding at June 30, 2018; 375,219,769 shares issued and outstanding at December 31, 2017	3,760	3,752
Additional paid-in capital	1,415,175	1,409,326
Accumulated other comprehensive income	325	307
Retained earnings	4,194,228	3,717,818
Total shareholders’ equity	5,613,488	5,131,203
Total liabilities and shareholders’ equity	$ 14,798,480	$ 14,199,651