Quarterly report pursuant to Section 13 or 15(d)

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

v3.8.0.1
Condensed Consolidating Financial Information (Condensed Consolidating Balance Sheets) (Details) - USD ($)
$ in Thousands
Sep. 30, 2017
Dec. 31, 2016
Sep. 30, 2016
Dec. 31, 2015
Current assets        
Cash and cash equivalents $ 125,271 $ 1,275,875 $ 364,276 $ 112,974
Restricted Cash 0 185,000    
Accounts receivable—oil and natural gas 180,106 136,761    
Accounts receivable - related parties 362 16    
Accounts receivable - intercompany   0    
Prepaid expenses and other current assets 5,666 3,135    
Short-term derivative instruments 35,332 3,488    
Total current assets 346,737 1,604,275    
Property and equipment        
Oil and natural gas properties 8,867,239 6,071,920    
Other property and equipment 84,225 68,986    
Accumulated depletion, depreciation, amortization and impairment (4,043,879) (3,789,780)    
Property and equipment, net 4,907,585 2,351,126    
Other assets        
Equity investments and investments in subsidiaries 279,282 243,920    
Long-term derivative instruments 6,409 5,696    
Deferred tax asset 4,692 4,692    
Inventories 13,908 4,504    
Other assets 18,985 8,932    
Total other assets 323,276 267,744    
Total assets 5,577,598 4,223,145    
Current liabilities        
Accounts payable and accrued liabilities 582,928 265,124    
Accounts payable - intercompany 0 0    
Asset retirement obligation—current 195 195 75  
Derivative instruments 29,130 119,219    
Current maturities of long-term debt 570 276    
Total current liabilities 612,823 384,814    
Long-term derivative instrument 19,712 26,759    
Asset retirement obligation—long-term 44,266 34,081 32,910  
Long-term debt, net of current maturities 1,958,136 1,593,599    
Total liabilities 2,634,937 2,039,253    
Stockholders’ equity        
Common stock 1,831 1,588    
Paid-in capital 4,413,623 3,946,442    
Accumulated other comprehensive (loss) income (40,339) (53,058)    
Retained (deficit) earnings (1,432,454) (1,711,080)    
Total stockholders’ equity 2,942,661 2,183,892 1,725,120 2,038,837
Total liabilities and stockholders’ equity 5,577,598 4,223,145    
Reportable Legal Entities | Parent        
Current assets        
Cash and cash equivalents 89,095 1,273,882 363,279 112,494
Restricted Cash   185,000    
Accounts receivable—oil and natural gas 126,746 137,087    
Accounts receivable - related parties 362 16    
Accounts receivable - intercompany 514,187 449,517    
Prepaid expenses and other current assets 5,486 3,135    
Short-term derivative instruments 35,332 3,488    
Total current assets 771,208 2,052,125    
Property and equipment        
Oil and natural gas properties 6,371,324 5,655,125    
Other property and equipment 84,182 68,943    
Accumulated depletion, depreciation, amortization and impairment (4,043,843) (3,789,746)    
Property and equipment, net 2,411,663 1,934,322    
Other assets        
Equity investments and investments in subsidiaries 2,262,011 236,327    
Long-term derivative instruments 6,409 5,696    
Deferred tax asset 4,692 4,692    
Inventories 9,438 3,095    
Other assets 10,561 8,932    
Total other assets 2,293,111 258,742    
Total assets 5,475,982 4,245,189    
Current liabilities        
Accounts payable and accrued liabilities 430,195 255,966    
Accounts payable - intercompany 57,927 31,202    
Asset retirement obligation—current 195 195    
Derivative instruments 29,130 119,219    
Current maturities of long-term debt 570 276    
Total current liabilities 518,017 406,858    
Long-term derivative instrument 19,712 26,759    
Asset retirement obligation—long-term 37,456 34,081    
Long-term debt, net of current maturities 1,958,136 1,593,599    
Total liabilities 2,533,321 2,061,297    
Stockholders’ equity        
Common stock 1,831 1,588    
Paid-in capital 4,413,623 3,946,442    
Accumulated other comprehensive (loss) income (40,339) (53,058)    
Retained (deficit) earnings (1,432,454) (1,711,080)    
Total stockholders’ equity 2,942,661 2,183,892    
Total liabilities and stockholders’ equity 5,475,982 4,245,189    
Reportable Legal Entities | Guarantors        
Current assets        
Cash and cash equivalents 36,175 1,993 996 479
Restricted Cash   0    
Accounts receivable—oil and natural gas 53,360 37,496    
Accounts receivable - related parties 0 0    
Accounts receivable - intercompany 57,927 1,151    
Prepaid expenses and other current assets 180 0    
Short-term derivative instruments 0 0    
Total current assets 147,642 40,640    
Property and equipment        
Oil and natural gas properties 2,496,644 417,524    
Other property and equipment 43 43    
Accumulated depletion, depreciation, amortization and impairment (36) (34)    
Property and equipment, net 2,496,651 417,533    
Other assets        
Equity investments and investments in subsidiaries 70,375 33,590    
Long-term derivative instruments 0 0    
Deferred tax asset 0 0    
Inventories 4,470 1,409    
Other assets 8,424 0    
Total other assets 83,269 34,999    
Total assets 2,727,562 493,172    
Current liabilities        
Accounts payable and accrued liabilities 152,733 9,158    
Accounts payable - intercompany 514,060 457,163    
Asset retirement obligation—current 0 0    
Derivative instruments 0 0    
Current maturities of long-term debt 0 0    
Total current liabilities 666,793 466,321    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 6,810 0    
Long-term debt, net of current maturities 0 0    
Total liabilities 673,603 466,321    
Stockholders’ equity        
Common stock 0 0    
Paid-in capital 1,905,599 33,822    
Accumulated other comprehensive (loss) income 0 0    
Retained (deficit) earnings 148,360 (6,971)    
Total stockholders’ equity 2,053,959 26,851    
Total liabilities and stockholders’ equity 2,727,562 493,172    
Reportable Legal Entities | Non-Guarantor        
Current assets        
Cash and cash equivalents 1 0 1 1
Restricted Cash   0    
Accounts receivable—oil and natural 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 0    
Property and equipment        
Oil and natural gas properties 0 0    
Other property and equipment 0 0    
Accumulated depletion, depreciation, amortization and impairment 0 0    
Property and equipment, net 0 0    
Other assets        
Equity investments and investments in subsidiaries 58,674 45,213    
Long-term derivative instruments 0 0    
Deferred tax asset 0 0    
Inventories 0 0    
Other assets 0 0    
Total other assets 58,674 45,213    
Total assets 58,675 45,213    
Current liabilities        
Accounts payable and accrued liabilities 0 0    
Accounts payable - intercompany 127 126    
Asset retirement obligation—current 0 0    
Derivative instruments 0 0    
Current maturities of long-term debt 0 0    
Total current liabilities 127 126    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0 0    
Long-term debt, net of current maturities 0 0    
Total liabilities 127 126    
Stockholders’ equity        
Common stock 0 0    
Paid-in capital 258,871 257,026    
Accumulated other comprehensive (loss) income (38,443) (50,931)    
Retained (deficit) earnings (161,880) (161,008)    
Total stockholders’ equity 58,548 45,087    
Total liabilities and stockholders’ equity 58,675 45,213    
Eliminations        
Current assets        
Cash and cash equivalents 0 0 $ 0 $ 0
Restricted Cash   0    
Accounts receivable—oil and natural gas 0 (37,822)    
Accounts receivable - related parties 0 0    
Accounts receivable - intercompany (572,114) (450,668)    
Prepaid expenses and other current assets 0 0    
Short-term derivative instruments 0 0    
Total current assets (572,114) (488,490)    
Property and equipment        
Oil and natural gas properties (729) (729)    
Other property and equipment 0 0    
Accumulated depletion, depreciation, amortization and impairment 0 0    
Property and equipment, net (729) (729)    
Other assets        
Equity investments and investments in subsidiaries (2,111,778) (71,210)    
Long-term derivative instruments 0 0    
Deferred tax asset 0 0    
Inventories 0 0    
Other assets 0 0    
Total other assets (2,111,778) (71,210)    
Total assets (2,684,621) (560,429)    
Current liabilities        
Accounts payable and accrued liabilities 0 0    
Accounts payable - intercompany (572,114) (488,491)    
Asset retirement obligation—current 0 0    
Derivative instruments 0 0    
Current maturities of long-term debt 0 0    
Total current liabilities (572,114) (488,491)    
Long-term derivative instrument 0 0    
Asset retirement obligation—long-term 0 0    
Long-term debt, net of current maturities 0 0    
Total liabilities (572,114) (488,491)    
Stockholders’ equity        
Common stock 0 0    
Paid-in capital (2,164,470) (290,848)    
Accumulated other comprehensive (loss) income 38,443 50,931    
Retained (deficit) earnings 13,520 167,979    
Total stockholders’ equity (2,112,507) (71,938)    
Total liabilities and stockholders’ equity $ (2,684,621) $ (560,429)