Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidating Financial Information - Condensed Consolidating Balance Sheets (Details)

v3.4.0.3
Condensed Consolidating Financial Information - Condensed Consolidating Balance Sheets (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Dec. 31, 2015
Mar. 31, 2015
Dec. 31, 2014
Current assets:        
Cash and cash equivalents $ 454,377 $ 112,974 $ 74,740 $ 142,340
Accounts receivable—oil and gas 78,501 71,872    
Accounts receivable - related parties 17 16    
Accounts receivable - intercompany   0    
Prepaid expenses and other current assets 2,755 3,905    
Short-term derivative instruments 152,211 142,794    
Total current assets 687,861 331,561    
Property and equipment:        
Oil and natural gas properties 5,506,570 5,424,342    
Other property and equipment 40,576 33,171    
Accumulated depletion, depreciation, amortization and impairment (3,112,767) (2,829,110)    
Property and equipment, net 2,434,379 2,628,403    
Other assets:        
Equity investments 244,601 242,393    
Long-term derivative instruments 42,455 51,088    
Deferred tax asset 76,327 74,925    
Other assets 17,036 6,364    
Total other assets 380,419 374,770    
Total assets 3,502,659 3,334,734    
Current liabilities:        
Accounts payable and accrued liabilities 235,834 265,128    
Accounts payable - intercompany 0 0    
Asset retirement obligation—current 75 75 75  
Short-term derivative instruments 5,715 437    
Deferred tax liability 51,908 50,697    
Current maturities of long-term debt 0 179    
Total current liabilities 293,532 316,516    
Long-term derivative instrument 10,127 6,935    
Asset retirement obligation—long-term 28,471 26,362 18,656  
Asset retirement obligation - long-term   26,362    
Long-term debt 949,740 946,084    
Total liabilities 1,281,870 1,295,897    
Stockholders’ equity:        
Common stock 1,252 1,082    
Paid-in capital 3,239,294 2,824,303    
Accumulated other comprehensive (loss) income (46,119) (55,177)    
Retained (deficit) earnings (973,638) (731,371)    
Total stockholders’ equity 2,220,789 2,038,837 2,310,293 2,296,296
Total liabilities and stockholders’ equity 3,502,659 3,334,734    
Parent        
Current assets:        
Cash and cash equivalents 453,743 112,494 73,667 141,535
Accounts receivable—oil and gas 78,419 72,241    
Accounts receivable - related parties 17 16    
Accounts receivable - intercompany 341,062 326,475    
Prepaid expenses and other current assets 2,755 3,905    
Short-term derivative instruments 152,211 142,794    
Total current assets 1,028,207 657,925    
Property and equipment:        
Oil and natural gas properties 5,174,684 5,108,258    
Other property and equipment 40,533 33,128    
Accumulated depletion, depreciation, amortization and impairment (3,112,737) (2,829,081)    
Property and equipment, net 2,102,480 2,312,305    
Other assets:        
Equity investments 234,063 231,892    
Long-term derivative instruments 42,455 51,088    
Deferred tax asset 76,327 74,925    
Other assets 17,038 6,364    
Total other assets 369,883 364,269    
Total assets 3,500,570 3,334,499    
Current liabilities:        
Accounts payable and accrued liabilities 233,745 264,893    
Accounts payable - intercompany 0 0    
Asset retirement obligation—current 75 75    
Short-term derivative instruments 5,715 437    
Deferred tax liability 51,908 50,697    
Current maturities of long-term debt   179    
Total current liabilities 291,443 316,281    
Long-term derivative instrument 10,127 6,935    
Asset retirement obligation—long-term 28,471      
Asset retirement obligation - long-term   26,362    
Long-term debt 949,740 946,084    
Total liabilities 1,279,781 1,295,662    
Stockholders’ equity:        
Common stock 1,252 1,082    
Paid-in capital 3,239,294 2,824,303    
Accumulated other comprehensive (loss) income (46,119) (55,177)    
Retained (deficit) earnings (973,638) (731,371)    
Total stockholders’ equity 2,220,789 2,038,837    
Total liabilities and stockholders’ equity 3,500,570 3,334,499    
Guarantors        
Current assets:        
Cash and cash equivalents 634 479 1,072 804
Accounts receivable—oil and gas 2,324 54    
Accounts receivable - related parties 0 0    
Accounts receivable - intercompany 661 60    
Prepaid expenses and other current assets   0    
Short-term derivative instruments 0 0    
Total current assets 3,619 593    
Property and equipment:        
Oil and natural gas properties 332,615 316,813    
Other property and equipment 43 43    
Accumulated depletion, depreciation, amortization and impairment (30) (29)    
Property and equipment, net 332,628 316,827    
Other assets:        
Equity investments 22,500 0    
Long-term derivative instruments 0 0    
Deferred tax asset 0 0    
Other assets (2) 0    
Total other assets 22,498      
Total assets 358,745 317,420    
Current liabilities:        
Accounts payable and accrued liabilities 4,801 527    
Accounts payable - intercompany 341,128 326,541    
Asset retirement obligation—current   0    
Short-term derivative instruments   0    
Deferred tax liability   0    
Current maturities of long-term debt   0    
Total current liabilities 345,929 327,068    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0      
Asset retirement obligation - long-term   0    
Long-term debt 0 0    
Total liabilities 345,929 327,068    
Stockholders’ equity:        
Common stock   0    
Paid-in capital 22,822 322    
Accumulated other comprehensive (loss) income   0    
Retained (deficit) earnings (10,006) (9,970)    
Total stockholders’ equity 12,816 (9,648)    
Total liabilities and stockholders’ equity 358,745 317,420    
Non-Guarantor        
Current assets:        
Cash and cash equivalents 0 1 1 1
Accounts receivable—oil and gas 0 0    
Accounts receivable - related parties 0 0    
Accounts receivable - intercompany 0 0    
Prepaid expenses and other current assets 0 0    
Short-term derivative instruments 0 0    
Total current assets   1    
Property and equipment:        
Oil and natural gas properties   0    
Other property and equipment   0    
Accumulated depletion, depreciation, amortization and impairment   0    
Property and equipment, net   0    
Other assets:        
Equity investments 39,054 50,644    
Long-term derivative instruments 0 0    
Deferred tax asset 0 0    
Other assets   0    
Total other assets 39,054 50,644    
Total assets 39,054 50,645    
Current liabilities:        
Accounts payable and accrued liabilities   0    
Accounts payable - intercompany 125 124    
Asset retirement obligation—current   0    
Short-term derivative instruments   0    
Deferred tax liability   0    
Current maturities of long-term debt   0    
Total current liabilities 125 124    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0      
Asset retirement obligation - long-term   0    
Long-term debt 0 0    
Total liabilities 125 124    
Stockholders’ equity:        
Common stock   0    
Paid-in capital 243,374 241,553    
Accumulated other comprehensive (loss) income (44,903) (55,177)    
Retained (deficit) earnings (159,542) (135,855)    
Total stockholders’ equity 38,929 50,521    
Total liabilities and stockholders’ equity 39,054 50,645    
Eliminations        
Current assets:        
Cash and cash equivalents 0 0 $ 0 $ 0
Accounts receivable—oil and gas (2,242) (423)    
Accounts receivable - related parties 0 0    
Accounts receivable - intercompany (341,723) (326,535)    
Prepaid expenses and other current assets   0    
Short-term derivative instruments 0 0    
Total current assets (343,965) (326,958)    
Property and equipment:        
Oil and natural gas properties (729) (729)    
Other property and equipment   0    
Accumulated depletion, depreciation, amortization and impairment   0    
Property and equipment, net (729) (729)    
Other assets:        
Equity investments (51,016) (40,143)    
Long-term derivative instruments 0 0    
Deferred tax asset 0 0    
Other assets   0    
Total other assets (51,016) (40,143)    
Total assets (395,710) (367,830)    
Current liabilities:        
Accounts payable and accrued liabilities (2,712) (292)    
Accounts payable - intercompany (341,253) (326,665)    
Asset retirement obligation—current   0    
Short-term derivative instruments   0    
Deferred tax liability   0    
Current maturities of long-term debt   0    
Total current liabilities (343,965) (326,957)    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0      
Asset retirement obligation - long-term   0    
Long-term debt 0 0    
Total liabilities (343,965) (326,957)    
Stockholders’ equity:        
Common stock   0    
Paid-in capital (266,196) (241,875)    
Accumulated other comprehensive (loss) income 44,903 55,177    
Retained (deficit) earnings 169,548 145,825    
Total stockholders’ equity (51,745) (40,873)    
Total liabilities and stockholders’ equity $ (395,710) $ (367,830)