Quarterly report pursuant to Section 13 or 15(d)

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

v2.4.0.8
Condensed Consolidating Financial Information - Condensed Consolidating Balance Sheets (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Current assets:        
Cash and cash equivalents $ 152,883 $ 458,956 $ 95,466 $ 167,088
Accounts receivable—oil and gas 139,591 58,824    
Accounts receivable - related parties 153 2,617    
Accounts receivable - intercompany    0    
Prepaid expenses and other current assets 3,578 2,581    
Deferred tax asset 7,819 6,927    
Short-term derivative instruments 5,753 324    
Note receivable - related party 875 875    
Total current assets 310,652 531,104    
Property and equipment:        
Oil and natural gas properties 3,586,016 2,477,178    
Other property and equipment 16,880 11,131    
Accumulated depletion, depreciation, amortization and impairment (969,962) (784,717)    
Property and equipment, net 2,632,934 1,703,592    
Other assets:        
Equity investments and investments in subsidiaries 373,215 440,068    
Derivative instruments 1,156 521    
Other assets 23,430 17,851    
Total other assets 397,801 458,440    
Total assets 3,341,387 2,693,136    
Current liabilities:        
Accounts payable and accrued liabilities 358,082 190,707    
Accounts payable - intercompany 0 0    
Asset retirement obligation—current 75 795 780  
Short-term derivative instruments 3,891 12,280    
Current maturities of long-term debt 166 159    
Total current liabilities 362,214 203,941    
Long-term derivative instrument 2,771 11,366    
Asset retirement obligation—long-term 16,318 14,288 13,988  
Deferred tax liability 153,733 114,275    
Long-term debt, net of current maturities 616,881 299,028    
Total liabilities 1,151,917 642,898    
Stockholders’ equity:        
Common stock 854 851    
Paid-in capital 1,824,955 1,813,058    
Accumulated other comprehensive loss (19,779) (9,781)    
Retained earnings (accumulated deficit) 383,440 246,110    
Total stockholders’ equity 2,189,470 2,050,238 1,617,569 1,126,408
Total liabilities and stockholders’ equity 3,341,387 2,693,136    
Parent Company [Member]
        
Current assets:        
Cash and cash equivalents 152,479 451,431 93,996 165,293
Accounts receivable—oil and gas 124,771 58,662    
Accounts receivable - related parties 153 2,617    
Accounts receivable - intercompany 36,679 21,379    
Prepaid expenses and other current assets 3,578 2,581    
Deferred tax asset 7,819 6,927    
Short-term derivative instruments 5,753 324    
Note receivable - related party 875 875    
Total current assets 332,107 544,796    
Property and equipment:        
Oil and natural gas properties 3,572,134 2,470,411    
Other property and equipment 16,850 11,102    
Accumulated depletion, depreciation, amortization and impairment (969,938) (784,695)    
Property and equipment, net 2,619,046 1,696,818    
Other assets:        
Equity investments and investments in subsidiaries 363,851 432,727    
Derivative instruments 1,156 521    
Other assets 23,430 17,851    
Total other assets 388,437 451,099    
Total assets 3,339,590 2,692,713    
Current liabilities:        
Accounts payable and accrued liabilities 356,285 190,284    
Accounts payable - intercompany 0 0    
Asset retirement obligation—current 75 795    
Short-term derivative instruments 3,891 12,280    
Current maturities of long-term debt 166 159    
Total current liabilities 360,417 203,518    
Long-term derivative instrument 2,771 11,366    
Asset retirement obligation—long-term 16,318 14,288    
Deferred tax liability 153,733 114,275    
Long-term debt, net of current maturities 616,881 299,028    
Total liabilities 1,150,120 642,475    
Stockholders’ equity:        
Common stock 854 851    
Paid-in capital 1,824,955 1,813,058    
Accumulated other comprehensive loss (19,779) (9,781)    
Retained earnings (accumulated deficit) 383,440 246,110    
Total stockholders’ equity 2,189,470 2,050,238    
Total liabilities and stockholders’ equity 3,339,590 2,692,713    
Guarantor [Member]
        
Current assets:        
Cash and cash equivalents 404 7,525 1,469 1,795
Accounts receivable—oil and gas 14,820 162    
Accounts receivable - related parties 0 0    
Accounts receivable - intercompany 27 27    
Prepaid expenses and other current assets    0    
Deferred tax asset 0 0    
Short-term derivative instruments 0 0    
Note receivable - related party 0 0    
Total current assets 15,251 7,714    
Property and equipment:        
Oil and natural gas properties 14,479 7,340    
Other property and equipment 30 29    
Accumulated depletion, depreciation, amortization and impairment (24) (22)    
Property and equipment, net 14,485 7,347    
Other assets:        
Equity investments and investments in subsidiaries    0    
Derivative instruments 0 0    
Other assets    0    
Total other assets          
Total assets 29,736 15,061    
Current liabilities:        
Accounts payable and accrued liabilities 1,797 423    
Accounts payable - intercompany 36,600 21,296    
Asset retirement obligation—current    0    
Short-term derivative instruments    0    
Current maturities of long-term debt    0    
Total current liabilities 38,397 21,719    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0 0    
Deferred tax liability    0    
Long-term debt, net of current maturities 0 0    
Total liabilities 38,397 21,719    
Stockholders’ equity:        
Common stock    0    
Paid-in capital 322 322    
Accumulated other comprehensive loss    0    
Retained earnings (accumulated deficit) (8,983) (6,980)    
Total stockholders’ equity (8,661) (6,658)    
Total liabilities and stockholders’ equity 29,736 15,061    
Non-Guarantor [Member]
        
Current assets:        
Cash and cash equivalents 0 0 1 0
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    
Deferred tax asset 0 0    
Short-term derivative instruments 0 0    
Note receivable - related party 0 0    
Total current assets          
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 and investments in subsidiaries 189,182 191,473    
Derivative instruments 0 0    
Other assets    0    
Total other assets 189,182 191,473    
Total assets 189,182 191,473    
Current liabilities:        
Accounts payable and accrued liabilities    0    
Accounts payable - intercompany 106 110    
Asset retirement obligation—current    0    
Short-term derivative instruments    0    
Current maturities of long-term debt    0    
Total current liabilities 106 110    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0 0    
Deferred tax liability    0    
Long-term debt, net of current maturities 0 0    
Total liabilities 106 110    
Stockholders’ equity:        
Common stock    0    
Paid-in capital 224,849 208,277    
Accumulated other comprehensive loss (19,779) (9,781)    
Retained earnings (accumulated deficit) (15,994) (7,133)    
Total stockholders’ equity 189,076 191,363    
Total liabilities and stockholders’ equity 189,182 191,473    
Eliminations [Member]
        
Current assets:        
Cash and cash equivalents 0 0 0 0
Accounts receivable—oil and gas    0    
Accounts receivable - related parties 0 0    
Accounts receivable - intercompany (36,706) (21,406)    
Prepaid expenses and other current assets    0    
Deferred tax asset 0 0    
Short-term derivative instruments 0 0    
Note receivable - related party 0 0    
Total current assets (36,706) (21,406)    
Property and equipment:        
Oil and natural gas properties (597) (573)    
Other property and equipment    0    
Accumulated depletion, depreciation, amortization and impairment    0    
Property and equipment, net (597) (573)    
Other assets:        
Equity investments and investments in subsidiaries (179,818) (184,132)    
Derivative instruments 0 0    
Other assets    0    
Total other assets (179,818) (184,132)    
Total assets (217,121) (206,111)    
Current liabilities:        
Accounts payable and accrued liabilities    0    
Accounts payable - intercompany (36,706) (21,406)    
Asset retirement obligation—current    0    
Short-term derivative instruments    0    
Current maturities of long-term debt    0    
Total current liabilities (36,706) (21,406)    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0 0    
Deferred tax liability    0    
Long-term debt, net of current maturities 0 0    
Total liabilities (36,706) (21,406)    
Stockholders’ equity:        
Common stock    0    
Paid-in capital (225,171) (208,599)    
Accumulated other comprehensive loss 19,779 9,781    
Retained earnings (accumulated deficit) 24,977 14,113    
Total stockholders’ equity (180,415) (184,705)    
Total liabilities and stockholders’ equity $ (217,121) $ (206,111)