Annual report pursuant to Section 13 and 15(d)

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

v3.8.0.1
Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Operating activities:                      
Net income (loss) $ 23,365 $ (1,297) $ 33,315 $ 24,299 $ 16,483 [1] $ 45,928 [1] $ (120,922) [1] $ (190,509) [1] $ 79,682 $ (249,020) $ (1,044,718)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Depreciation, depletion, amortization and accretion                 155,682 211,609 394,071
Ceiling test write-down of oil and natural gas properties           57,900 $ 104,600 116,600 0 279,063 987,238
Gain on exchange of debt           $ (123,900)     (7,811) (123,923)  
Debt issuance costs write-down/amortization of debt items                 1,715 2,548 4,411
Share-based compensation                 7,191 11,013 10,242
Derivative (gain) loss                 (4,199) 2,926 (14,375)
Cash receipts (payments) on derivative settlements, net                 4,199 4,746 6,703
Deferred income taxes                 217 28,392 (203,272)
Changes in operating assets and liabilities:                      
Oil and natural gas receivables                 (2,370) (7,005) 32,236
Joint interest receivables                 2,131 12 21,645
Insurance reimbursements                 31,740    
Income taxes                 (1,063) (64,274) (7)
Prepaid expenses and other assets                 3,238 (14,946) 17,816
Escrow deposit - Apache lawsuit                 (49,500)    
Asset retirement obligation settlements                 (72,409) (72,320) (32,555)
Accounts payable, accrued liabilities and other                 10,965 5,359 (46,207)
Net cash provided by (used in) operating activities                 159,408 14,180 133,228
Investing activities:                      
Investment in oil and natural gas properties and equipment                 (130,048) (48,606) (230,161)
Changes in operating assets and liabilities associated with investing activities                 23,874 (35,194) (55,425)
Proceeds from sales of assets, net                   1,500 372,939
Purchases of furniture, fixtures and other                 (933) (96) (1,278)
Net cash provided by (used in) investing activities                 (107,107) (82,396) 86,075
Financing activities:                      
Borrowings of long-term debt - revolving bank credit facility                   340,000 263,000
Repayments of long-term debt - revolving bank credit facility                   (340,000) (710,000)
Debt exchange/issuance costs                 (421) (18,464) (6,669)
Other                 (1,295) (928) (886)
Net cash provided by (used in) financing activities                 (23,479) 53,038 (157,555)
Increase (decrease) in cash and cash equivalents                 28,822 (15,178) 61,748
Cash and cash equivalents, beginning of period       70,236       85,414 70,236 85,414 23,666
Cash and cash equivalents, end of period 99,058       70,236       99,058 70,236 85,414
Parent Company                      
Operating activities:                      
Net income (loss)                 82,530 (100,478) (1,192,307)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Depreciation, depletion, amortization and accretion                 81,378 81,433 212,741
Ceiling test write-down of oil and natural gas properties                   28,305 616,947
Gain on exchange of debt                 (7,811) (123,923)  
Debt issuance costs write-down/amortization of debt items                 1,715 2,548 4,411
Share-based compensation                 7,191 11,013 10,242
Derivative (gain) loss                 (4,199) 2,926 (14,375)
Cash receipts (payments) on derivative settlements, net                 4,199 4,746 6,703
Deferred income taxes                 217 28,048 (77,421)
Earnings (loss) of affiliates                 (61,444) 109,853 464,931
Changes in operating assets and liabilities:                      
Oil and natural gas receivables                 (3,491) 1,630 39,078
Joint interest receivables                 2,131 12 21,645
Insurance reimbursements                 31,740    
Income taxes                 (17,586) (64,274) (7)
Prepaid expenses and other assets                 3,447 (14,395) (13,916)
Escrow deposit - Apache lawsuit                 (49,500)    
Asset retirement obligation settlements                 (55,672) (49,303) (26,637)
Accounts payable, accrued liabilities and other                 127,496 45,817 (141,608)
Net cash provided by (used in) operating activities                 142,341 (36,042) (89,573)
Investing activities:                      
Investment in oil and natural gas properties and equipment                 (105,179) (37,418) (31,534)
Changes in operating assets and liabilities associated with investing activities                 16,072 4,340 (29,806)
Proceeds from sales of assets, net                   1,000 372,939
Investment in subsidiary                     (1,445)
Purchases of furniture, fixtures and other                 (933) (96) (1,278)
Net cash provided by (used in) investing activities                 (90,040) (32,174) 308,876
Financing activities:                      
Borrowings of long-term debt - revolving bank credit facility                   340,000 263,000
Repayments of long-term debt - revolving bank credit facility                   (340,000) (710,000)
Debt exchange/issuance costs                 (421) (18,464) (6,669)
Other                 (1,295) (928) (886)
Net cash provided by (used in) financing activities                 (23,479) 53,038 (157,555)
Increase (decrease) in cash and cash equivalents                 28,822 (15,178) 61,748
Cash and cash equivalents, beginning of period       $ 70,236       $ 85,414 70,236 85,414  
Cash and cash equivalents, end of period $ 99,058       $ 70,236       99,058 70,236 85,414
Guarantor Subsidiaries                      
Operating activities:                      
Net income (loss)                 61,444 (109,853) (464,931)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Depreciation, depletion, amortization and accretion                 71,456 121,683 181,330
Ceiling test write-down of oil and natural gas properties                   110,709 517,880
Deferred income taxes                   344 (125,851)
Changes in operating assets and liabilities:                      
Oil and natural gas receivables                 1,121 (8,635) (6,842)
Income taxes                 16,523    
Prepaid expenses and other assets                 (108,773) (78,547) 122,977
Asset retirement obligation settlements                 (16,737) (23,017) (5,918)
Accounts payable, accrued liabilities and other                 (7,967) 37,538 4,156
Net cash provided by (used in) operating activities                 17,067 50,222 222,801
Investing activities:                      
Investment in oil and natural gas properties and equipment                 (24,869) (11,188) (198,627)
Changes in operating assets and liabilities associated with investing activities                 7,802 (39,534) (25,619)
Proceeds from sales of assets, net                   500  
Net cash provided by (used in) investing activities                 (17,067) (50,222) (224,246)
Financing activities:                      
Investment from parent                     1,445
Net cash provided by (used in) financing activities                     1,445
11.00% 1.5 Lien Term Loan, Due November 2019                      
Financing activities:                      
Issuance of Term Loan                   75,000  
Payment of interest                 (8,227) (2,570)  
11.00% 1.5 Lien Term Loan, Due November 2019 | Parent Company                      
Financing activities:                      
Issuance of Term Loan                   75,000  
Payment of interest                 (8,227) (2,570)  
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020                      
Financing activities:                      
Payment of interest                 (7,335)    
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020 | Parent Company                      
Financing activities:                      
Payment of interest                 (7,335)    
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021                      
Financing activities:                      
Payment of interest                 (6,201)    
8.50%/10.00% Third Lien PIK Toggle Notes, Due June 2021 | Parent Company                      
Financing activities:                      
Payment of interest                 (6,201)    
9.00 % Second Lien Term Loan, Due May 2020                      
Financing activities:                      
Issuance of Term Loan                     297,000
9.00 % Second Lien Term Loan, Due May 2020 | Parent Company                      
Financing activities:                      
Issuance of Term Loan                     297,000
Eliminations                      
Operating activities:                      
Net income (loss)                 (64,292) (38,689) 612,520
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Depreciation, depletion, amortization and accretion                 2,848 8,493  
Ceiling test write-down of oil and natural gas properties                   140,049 (147,589)
Earnings (loss) of affiliates                 61,444 (109,853) (464,931)
Changes in operating assets and liabilities:                      
Prepaid expenses and other assets                 108,564 77,996 (91,245)
Accounts payable, accrued liabilities and other                 $ (108,564) $ (77,996) 91,245
Investing activities:                      
Investment in subsidiary                     1,445
Net cash provided by (used in) investing activities                     1,445
Financing activities:                      
Investment from parent                     (1,445)
Net cash provided by (used in) financing activities                     $ (1,445)
[1] During 2016, we recorded in first, second and third quarter ceiling test write-downs of oil and natural gas properties of $116.6 million, $104.6 million and $57.9 million, respectively. In the third quarter of 2016, we recorded a gain on exchange of debt of $123.9 million. See Note 1 and Note 2 for additional information.