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Condensed Consolidated Balance Sheet (Unaudited) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
ASSETS    
Cash and cash equivalents $ 19,397 $ 9,730
Accounts receivable — oil and gas revenues 92,684 96,495
Accounts receivable — joint interest and other 104,512 100,914
Inventory 10,723 11,072
Prepaid expenses 7,411 7,328
Derivative instruments 91,590 139,697
Other current assets 46 50
Total current assets 326,363 365,286
Property, plant and equipment    
Oil and gas properties (successful efforts method) 6,327,027 6,284,401
Other property and equipment 477,343 443,265
Less: accumulated depreciation, depletion, amortization and impairment (1,627,201) (1,509,424)
Total property, plant and equipment, net 5,177,169 5,218,242
Assets held for sale 25,845 26,728
Derivative instruments 7,521 15,776
Other assets 23,370 23,343
Total assets 5,560,268 5,649,375
Current liabilities    
Accounts payable 10,101 9,983
Revenues and production taxes payable 115,412 132,356
Accrued liabilities 126,765 167,669
Accrued interest payable 24,277 49,413
Derivative instruments 1,018 0
Advances from joint interest partners 4,390 4,647
Other current liabilities 500 6,500
Total current liabilities 282,463 370,568
Long-term debt 2,201,938 2,302,584
Deferred income taxes 580,526 608,155
Asset retirement obligations 36,088 35,338
Liabilities held for sale 10,155 10,228
Derivative instruments 1,558 0
Other liabilities 3,091 3,160
Total liabilities $ 3,115,819 $ 3,330,033
Commitments and contingencies
Stockholders’ equity    
Common stock, $0.01 par value: 300,000,000 shares authorized; 181,298,001 shares issued and 180,582,855 shares outstanding at March 31, 2016 and 139,583,990 shares issued and 139,076,064 shares outstanding at December 31, 2015 $ 1,774 $ 1,376
Treasury stock, at cost: 715,146 and 507,926 shares at March 31, 2016 and December 31, 2015, respectively (14,652) (13,620)
Additional paid-in capital 1,687,261 1,497,065
Retained earnings 770,066 834,521
Total stockholders’ equity 2,444,449 2,319,342
Total liabilities and stockholders’ equity $ 5,560,268 $ 5,649,375