Consolidated Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Current assets
Cash and cash equivalents	$ 11,226	$ 9,730
Accounts receivable, net	204,335	197,409
Inventory	10,648	11,072
Prepaid expenses	7,623	7,328
Derivative instruments	362	139,697
Other current assets	4,355	50
Total current assets	238,549	365,286
Property, plant and equipment
Oil and gas properties (successful efforts method)	7,296,568	6,284,401
Other property and equipment	618,790	443,265
Less: accumulated depreciation, depletion, amortization and impairment	(1,995,791)	(1,509,424)
Total property, plant and equipment, net	5,919,567	5,218,242
Assets held for sale	0	26,728
Derivative instruments	0	15,776
Other assets	20,516	23,343
Total assets	6,178,632	5,649,375
Current liabilities
Accounts payable	4,645	9,983
Revenues and production taxes payable	139,737	132,356
Accrued liabilities	119,173	167,669
Accrued interest payable	39,004	49,413
Derivative instruments	60,469	0
Advances from joint interest partners	7,597	4,647
Other current liabilities	10,490	6,500
Total current liabilities	381,115	370,568
Long-term debt	2,297,214	2,302,584
Deferred income taxes	513,529	608,155
Asset retirement obligations	48,985	35,338
Liabilities held for sale	0	10,228
Derivative instruments	11,714	0
Other liabilities	2,918	3,160
Total liabilities	3,255,475	3,330,033
Commitments and contingencies
Stockholders’ equity
Common stock, $0.01 par value: 450,000,000 and 300,000,000 shares authorized at December 31, 2016 and 2015, respectively; 237,201,064 shares issued and 236,344,172 shares outstanding at December 31, 2016 and 139,583,990 shares issued and 139,076,064 shares outstanding at December 31, 2015	2,331	1,376
Treasury stock, at cost: 856,892 shares and 507,926 shares at December 31, 2016 and 2015, respectively	(15,950)	(13,620)
Additional paid-in-capital	2,345,271	1,497,065
Retained earnings	591,505	834,521
Total stockholders’ equity	2,923,157	2,319,342
Total liabilities and stockholders’ equity	$ 6,178,632	$ 5,649,375