Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Operating activities:        
Net income $ 36,083 $ 33,315 $ 63,723 $ 57,614
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation, depletion, amortization and accretion 39,757 40,364 77,838 80,354
Gain on exchange of debt   (8,056)   (7,811)
Amortization of debt items and other items     1,126 836
Share-based compensation     2,434 3,466
Derivative (gain) loss 6,219 (3,689) 6,219 (7,644)
Cash receipts on derivative settlements, net     (1,149) 2,208
Deferred income taxes     221 212
Changes in operating assets and liabilities:        
Oil and natural gas receivables     (6,630) 3,675
Joint interest receivables     251 1,965
Insurance reimbursements       30,100
Income taxes     (138) (16,960)
Prepaid expenses and other assets     (14,323) (3,575)
Escrow deposit - Apache lawsuit       (49,500)
Asset retirement obligation settlements     (12,124) (36,021)
Accounts payable, accrued liabilities and other     (2,256) 6,666
Net cash provided by operating activities     115,192 65,585
Investing activities:        
Investment in oil and natural gas properties and equipment     (31,803) (43,800)
Changes in operating assets and liabilities associated with investing activities     (29,330) (827)
Acquisition of property interest     (16,617)
Purchases of furniture, fixtures and other       (853)
Net cash used in investing activities     (77,750) (45,480)
Financing activities:        
Other     (26) (372)
Net cash used in financing activities     (7,060) (18,021)
Increase in cash and cash equivalents     30,382 2,084
Cash and cash equivalents, beginning of period     99,058 70,236
Cash and cash equivalents, end of period 129,440 72,320 129,440 72,320
Parent Company        
Operating activities:        
Net income 39,166 34,103 69,667 59,133
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation, depletion, amortization and accretion 19,954 21,433 39,374 40,587
Gain on exchange of debt   (8,056)   (7,811)
Amortization of debt items and other items     1,126 836
Share-based compensation     2,434 3,466
Derivative (gain) loss 6,219 (3,689) 6,219 (7,644)
Cash receipts on derivative settlements, net     (1,149) 2,208
Deferred income taxes     221 212
Earnings of affiliates (24,502) (18,941) (46,669) (36,468)
Changes in operating assets and liabilities:        
Oil and natural gas receivables     (2,444) (1,095)
Joint interest receivables     251 1,965
Insurance reimbursements       30,100
Income taxes     (12,772) (25,487)
Prepaid expenses and other assets     (37,025) (3,165)
Escrow deposit - Apache lawsuit       (49,500)
Asset retirement obligation settlements     (7,725) (25,044)
Accounts payable, accrued liabilities and other     80,147 81,785
Net cash provided by operating activities     91,655 64,078
Investing activities:        
Investment in oil and natural gas properties and equipment     (15,638) (41,854)
Changes in operating assets and liabilities associated with investing activities     (21,958) (1,266)
Acquisition of property interest     (16,617)  
Purchases of furniture, fixtures and other       (853)
Net cash used in investing activities     (54,213) (43,973)
Financing activities:        
Other     (26) (372)
Net cash used in financing activities     (7,060) (18,021)
Increase in cash and cash equivalents     30,382 2,084
Cash and cash equivalents, beginning of period     99,058 70,236
Cash and cash equivalents, end of period 129,440 72,320 129,440 72,320
Guarantor Subsidiaries        
Operating activities:        
Net income 24,502 18,941 46,669 36,468
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation, depletion, amortization and accretion 16,743 18,143 32,557 38,248
Changes in operating assets and liabilities:        
Oil and natural gas receivables     (4,383) 4,770
Income taxes     12,634 8,527
Prepaid expenses and other assets     (72,465) (74,591)
Asset retirement obligation settlements     (4,399) (10,977)
Accounts payable, accrued liabilities and other     8,055 (938)
Net cash provided by operating activities     18,668 1,507
Investing activities:        
Investment in oil and natural gas properties and equipment     (9,999) (1,946)
Changes in operating assets and liabilities associated with investing activities     (8,669) 439
Net cash used in investing activities     (18,668) (1,507)
Non-Guarantor Adjustments        
Operating activities:        
Net income (187)   (201)  
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation, depletion, amortization and accretion 164   164  
Changes in operating assets and liabilities:        
Oil and natural gas receivables     197  
Prepaid expenses and other assets     4,445  
Accounts payable, accrued liabilities and other     264  
Net cash provided by operating activities     4,869  
Investing activities:        
Investment in oil and natural gas properties and equipment     (6,166)  
Changes in operating assets and liabilities associated with investing activities     1,297  
Net cash used in investing activities     (4,869)  
11.00% 1.5 Lien Term Loan, Due November 2019        
Financing activities:        
Payment of interest     (4,114) (4,113)
11.00% 1.5 Lien Term Loan, Due November 2019 | Parent Company        
Financing activities:        
Payment of interest     (4,114) (4,113)
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020        
Financing activities:        
Payment of interest     (2,920) (7,335)
9.00%/10.75% Second Lien PIK Toggle Notes, Due May 2020 | Parent Company        
Financing activities:        
Payment of interest     (2,920) (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)
Eliminations        
Operating activities:        
Net income (27,398) (19,729) (52,412) (37,987)
Adjustments to reconcile net income to net cash provided by operating activities:        
Depreciation, depletion, amortization and accretion 2,896 788 5,743 1,519
Earnings of affiliates $ 24,502 $ 18,941 46,669 36,468
Changes in operating assets and liabilities:        
Prepaid expenses and other assets     90,722 74,181
Accounts payable, accrued liabilities and other     $ (90,722) $ (74,181)