Quarterly report pursuant to Section 13 or 15(d)

Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details)

v3.5.0.2
Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 30, 2015
Dec. 31, 2015
Operating activities:          
Net loss $ (120,922) $ (260,449) $ (311,431) $ (515,544)  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion 57,493 103,342 121,226 228,809  
Ceiling test write-down of oil and natural gas properties 104,592 252,772 221,151 513,162 $ 987,200
Debt issuance costs write-off/amortization of debt items     1,880 2,432  
Share-based compensation 2,585 2,892 5,121 5,708  
Derivative loss 4,942 1,078 2,449 1,078  
Cash receipts on derivative settlements     4,746    
Deferred income taxes     19,285 (147,708)  
Changes in operating assets and liabilities:          
Oil and natural gas receivables     1,226 15,285  
Joint interest and other receivables     1,763 11,036  
Income taxes     (57,931) (325)  
Prepaid expenses and other assets     (10,365) 8,929  
Asset retirement obligation settlements     (25,156) (21,939)  
Accounts payable, accrued liabilities and other     14,767 (20,013)  
Net cash provided by (used in) operating activities     (11,269) 80,910  
Investing activities:          
Investment in oil and natural gas properties and equipment     (17,712) (150,994)  
Changes in operating assets and liabilities associated with investing activities     (34,122) (50,849)  
Proceeds from sales of assets     1,500    
Purchases of furniture, fixtures and other     (70) (709)  
Net cash used in investing activities     (50,404) (202,552)  
Financing activities:          
Borrowings of long-term debt - revolving bank credit facility     340,000 194,000  
Repayments of long-term debt - revolving bank credit facility     (192,000) (381,000)  
Issuance of 9.00% Term Loan       297,000  
Debt issuance costs       (6,407)  
Other     83 54  
Net cash provided by financing activities     148,083 103,647  
Increase (decrease) in cash and cash equivalents     86,410 (17,995)  
Cash and cash equivalents, beginning of period     85,414 23,666 23,666
Cash and cash equivalents, end of period 171,824 5,671 171,824 5,671 85,414
Parent Company          
Operating activities:          
Net loss (48,427) (260,449) (167,812) (515,544)  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion 22,648 58,023 43,271 129,374  
Ceiling test write-down of oil and natural gas properties   181,300   371,995  
Debt issuance costs write-off/amortization of debt items     1,880 2,432  
Share-based compensation     5,121 5,708  
Derivative loss 4,942 1,078 2,449 1,078  
Cash receipts on derivative settlements     4,746    
Deferred income taxes     21,099 (105,818)  
Loss of affiliates 40,765 54,548 113,794 119,552  
Changes in operating assets and liabilities:          
Oil and natural gas receivables     1,177 18,710  
Joint interest and other receivables     1,763 11,036  
Income taxes     (57,931) 22,580  
Prepaid expenses and other assets     (9,405) (31,091)  
Asset retirement obligation settlements     (12,702) (21,146)  
Accounts payable, accrued liabilities and other     (783) (74,370)  
Net cash provided by (used in) operating activities     (53,333) (65,504)  
Investing activities:          
Investment in oil and natural gas properties and equipment     (8,600) (25,313)  
Changes in operating assets and liabilities associated with investing activities     (670) (28,671)  
Proceeds from sales of assets     1,000    
Investment in subsidiary       (1,445)  
Purchases of furniture, fixtures and other     (70) (709)  
Net cash used in investing activities     (8,340) (56,138)  
Financing activities:          
Borrowings of long-term debt - revolving bank credit facility     340,000 194,000  
Repayments of long-term debt - revolving bank credit facility     (192,000) (381,000)  
Issuance of 9.00% Term Loan       297,000  
Debt issuance costs       (6,407)  
Other     83 54  
Net cash provided by financing activities     148,083 103,647  
Increase (decrease) in cash and cash equivalents     86,410 (17,995)  
Cash and cash equivalents, beginning of period     85,414 23,666 23,666
Cash and cash equivalents, end of period 171,824 5,671 171,824 5,671 $ 85,414
Guarantor Subsidiaries          
Operating activities:          
Net loss (40,765) (54,548) (113,794) (119,552)  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion 31,934 45,319 70,095 99,435  
Ceiling test write-down of oil and natural gas properties 35,008 71,472 85,392 141,167  
Deferred income taxes     (1,814) (41,890)  
Changes in operating assets and liabilities:          
Oil and natural gas receivables     49 (3,425)  
Income taxes       (22,905)  
Prepaid expenses and other assets     (17,424) 94,890  
Asset retirement obligation settlements     (12,454) (793)  
Accounts payable, accrued liabilities and other     32,014 (513)  
Net cash provided by (used in) operating activities     42,064 146,414  
Investing activities:          
Investment in oil and natural gas properties and equipment     (9,112) (125,681)  
Changes in operating assets and liabilities associated with investing activities     (33,452) (22,178)  
Proceeds from sales of assets     500    
Net cash used in investing activities     (42,064) (147,859)  
Financing activities:          
Investment from parent       1,445  
Net cash provided by financing activities       1,445  
Eliminations          
Operating activities:          
Net loss (31,730) 54,548 (29,825) 119,552  
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:          
Depreciation, depletion, amortization and accretion 2,911   7,860    
Ceiling test write-down of oil and natural gas properties 69,584   135,759    
Loss of affiliates $ (40,765) $ (54,548) (113,794) (119,552)  
Changes in operating assets and liabilities:          
Prepaid expenses and other assets     16,464 (54,870)  
Accounts payable, accrued liabilities and other     $ (16,464) 54,870  
Investing activities:          
Investment in subsidiary       1,445  
Net cash used in investing activities       1,445  
Financing activities:          
Investment from parent       (1,445)  
Net cash provided by financing activities       $ (1,445)