Annual report pursuant to Section 13 and 15(d)

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

v3.3.1.900
Supplemental Guarantor Information - Condensed Consolidating Statement of Cash Flows (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Operating activities:                      
Net income (loss) $ (51,606,000) [1] $ (477,568,000) [1] $ (260,449,000) [1] $ (255,095,000) [1] $ (33,371,000) $ 684,000 $ 9,837,000 $ 11,189,000 $ (1,044,718,000) $ (11,661,000) $ 51,322,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Depreciation, depletion, amortization and accretion                 394,071,000 511,102,000 451,529,000
Ceiling test write-down of oil and natural gas properties 32,400,000 $ 441,600,000 $ 252,800,000 260,400,000         987,238,000 0 0
Debt issuance costs write-off/amortization of debt items                 4,411,000 701,000 1,645,000
Share-based compensation                 10,242,000 14,744,000 11,525,000
Derivative (gain) loss                 (14,375,000) (3,965,000) 8,470,000
Cash receipts (payments) on derivative settlements, net                 6,703,000 (5,318,000) (8,589,000)
Deferred income taxes                 (203,272,000) (4,760,000) 30,920,000
Changes in operating assets and liabilities:                      
Oil and natural gas receivables                 32,236,000 29,510,000 980,000
Joint interest and other receivables                 21,633,000 (4,255,000) 34,257,000
Income taxes                 (7,000) 3,143,000 44,328,000
Prepaid expenses and other assets                 17,816,000 15,012,000 (10,044,000)
Asset retirement obligation settlements                 (32,555,000) (74,313,000) (81,543,000)
Accounts payable, accrued liabilities and other                 (46,869,000) 4,033,000 27,908,000
Net cash provided by operating activities                 132,554,000 473,973,000 562,708,000
Investing activities:                      
Acquisition of property interest in oil and natural gas properties                   (72,234,000) (82,424,000)
Investment in oil and natural gas properties and equipment                 (230,161,000) (554,378,000) (551,954,000)
Changes in operating assets and liabilities associated with investing activities                 (55,425,000) 37,450,000 (1,350,000)
Proceeds from sales of assets and other, net                 372,939,000   21,008,000
Purchases of furniture, fixtures and other                 (1,278,000) (3,340,000) (1,435,000)
Net cash provided by (used in) investing activities                 86,075,000 (592,502,000) (616,155,000)
Financing activities:                      
Borrowings of long-term debt - revolving bank credit facility                 263,000,000 556,000,000 563,000,000
Repayments of long-term debt - revolving bank credit facility                 (710,000,000) (399,000,000) (443,000,000)
Issuance of 9.00% Term Loan                 297,000,000    
Debt issuance costs                 (6,669,000)   (3,892,000)
Dividends to shareholders                   (30,260,000) (58,846,000)
Other                 (212,000) (345,000) (260,000)
Net cash provided by (used in) financing activities                 (156,881,000) 126,395,000 57,002,000
Increase in cash and cash equivalents                 61,748,000 7,866,000 3,555,000
Cash and cash equivalents, beginning of period       23,666,000       15,800,000 23,666,000 15,800,000 12,245,000
Cash and cash equivalents, end of period 85,414,000       23,666,000       85,414,000 23,666,000 15,800,000
Parent Company                      
Operating activities:                      
Net income (loss)                 (1,192,307,000) (11,661,000) 51,322,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Depreciation, depletion, amortization and accretion                 212,741,000 278,387,000 250,818,000
Ceiling test write-down of oil and natural gas properties                 616,947,000    
Debt issuance costs write-off/amortization of debt items                 4,411,000 701,000 1,645,000
Share-based compensation                 10,242,000 14,744,000 11,525,000
Derivative (gain) loss                 (14,375,000) (3,965,000) 8,470,000
Cash receipts (payments) on derivative settlements, net                 6,703,000 (5,318,000) (8,589,000)
Deferred income taxes                 (77,421,000) (32,456,000) 7,564,000
Earnings (loss) of affiliates                 464,931,000 (8,320,000) (24,400,000)
Changes in operating assets and liabilities:                      
Oil and natural gas receivables                 39,078,000 19,553,000 6,182,000
Joint interest and other receivables                 21,633,000 (4,255,000) 34,257,000
Income taxes                 (7,000) 27,650,000 54,813,000
Prepaid expenses and other assets                 (13,916,000) 45,962,000 (25,329,000)
Asset retirement obligation settlements                 (26,637,000) (57,253,000) (65,438,000)
Accounts payable, accrued liabilities and other                 (142,270,000) 11,083,000 74,693,000
Net cash provided by operating activities                 (90,247,000) 274,852,000 377,533,000
Investing activities:                      
Acquisition of property interest in oil and natural gas properties                   (17,407,000)  
Investment in oil and natural gas properties and equipment                 (31,534,000) (312,044,000) (349,804,000)
Changes in operating assets and liabilities associated with investing activities                 (29,806,000) 1,733,000 (14,732,000)
Proceeds from sales of assets and other, net                 372,939,000   21,008,000
Investment in subsidiary                 (1,445,000) (62,323,000) (86,017,000)
Purchases of furniture, fixtures and other                 (1,278,000) (3,340,000) (1,435,000)
Net cash provided by (used in) investing activities                 308,876,000 (393,381,000) (430,980,000)
Financing activities:                      
Borrowings of long-term debt - revolving bank credit facility                 263,000,000 556,000,000 563,000,000
Repayments of long-term debt - revolving bank credit facility                 (710,000,000) (399,000,000) (443,000,000)
Issuance of 9.00% Term Loan                 297,000,000    
Debt issuance costs                 (6,669,000)   (3,892,000)
Dividends to shareholders                   (30,260,000) (58,846,000)
Other                 (212,000) (345,000) (260,000)
Net cash provided by (used in) financing activities                 (156,881,000) 126,395,000 57,002,000
Increase in cash and cash equivalents                 61,748,000 7,866,000 3,555,000
Cash and cash equivalents, beginning of period       $ 23,666,000       $ 15,800,000 23,666,000 15,800,000 12,245,000
Cash and cash equivalents, end of period $ 85,414,000       $ 23,666,000       85,414,000 23,666,000 15,800,000
Guarantor Subsidiaries                      
Operating activities:                      
Net income (loss)                 (464,931,000) 8,320,000 24,400,000
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Depreciation, depletion, amortization and accretion                 181,330,000 232,715,000 200,711,000
Ceiling test write-down of oil and natural gas properties                 517,880,000    
Deferred income taxes                 (125,851,000) 27,696,000 23,356,000
Changes in operating assets and liabilities:                      
Oil and natural gas receivables                 (6,842,000) 9,957,000 (5,202,000)
Income taxes                   (24,507,000) (10,485,000)
Prepaid expenses and other assets                 122,977,000 (7,525,000) (18,835,000)
Asset retirement obligation settlements                 (5,918,000) (17,060,000) (16,105,000)
Accounts payable, accrued liabilities and other                 4,156,000 (30,475,000) (12,665,000)
Net cash provided by operating activities                 222,801,000 199,121,000 185,175,000
Investing activities:                      
Acquisition of property interest in oil and natural gas properties                   (54,827,000) (82,424,000)
Investment in oil and natural gas properties and equipment                 (198,627,000) (242,334,000) (202,150,000)
Changes in operating assets and liabilities associated with investing activities                 (25,619,000) 35,717,000 13,382,000
Net cash provided by (used in) investing activities                 (224,246,000) (261,444,000) (271,192,000)
Financing activities:                      
Investment from parent                 1,445,000 62,323,000 86,017,000
Net cash provided by (used in) financing activities                 1,445,000 62,323,000 86,017,000
Eliminations                      
Operating activities:                      
Net income (loss)                 612,520,000 (8,320,000) (24,400,000)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:                      
Ceiling test write-down of oil and natural gas properties                 (147,589,000)    
Earnings (loss) of affiliates                 (464,931,000) 8,320,000 24,400,000
Changes in operating assets and liabilities:                      
Prepaid expenses and other assets                 (91,245,000) (23,425,000) 34,120,000
Accounts payable, accrued liabilities and other                 91,245,000 23,425,000 (34,120,000)
Investing activities:                      
Investment in subsidiary                 1,445,000 62,323,000 86,017,000
Net cash provided by (used in) investing activities                 1,445,000 62,323,000 86,017,000
Financing activities:                      
Investment from parent                 (1,445,000) (62,323,000) (86,017,000)
Net cash provided by (used in) financing activities                 $ (1,445,000) $ (62,323,000) $ (86,017,000)
[1] During 2015, we recorded in first, second, third and fourth quarter ceiling test write-downs of oil and natural gas properties of $260.4 million, $252.8 million, $441.6 million and $32.4 million, respectively. See Note 1 for additional information.