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Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Cash Flows (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Cash flows from operating activities: |  |
Net income (loss) | $ 23,825 | $ (64,455)
Adjustments to reconcile net income to cash provided by operating activities: |  |
Equity in loss of subsidiaries | 0 | 0
Depreciation, depletion and amortization | 126,666 | 122,449
Gain on extinguishment of debt | 0 | (7,016)
Impairment | 2,682 | 3,562
Deferred income taxes | 16,037 | (27,629)
Derivative instruments | (56,075) | (14,375)
Stock-based compensation expenses | 6,708 | 6,730
Deferred financing costs amortization and other | 4,940 | 5,066
Working capital and other changes: |  |
Change in accounts receivable | (22,478) | (995)
Change in inventory | (3,679) | 349
Change in prepaid expenses | 282 | 241
Change in other current assets | (110) | 4
Change in other assets | (4) | 77
Change in accounts payable, interest payable and accrued liabilities | 6,060 | (64,056)
Change in other current liabilities | 2,945 | (6,000)
Change in other liabilities | 0 | (3)
Net cash provided by (used in) operating activities | 107,799 | (46,051)
Cash flows from investing activities: |  |
Capital expenditures | (96,047) | (103,411)
Derivative settlements | (7,960) | 73,313
Advances from joint interest partners | (759) | (257)
Net cash used in investing activities | (104,766) | (30,355)
Cash flows from financing activities: |  |
Proceeds from revolving credit facility | 246,000 | 214,000
Principal payments on revolving credit facility | (241,000) | (287,000)
Repurchase of senior unsecured notes | 0 | (22,308)
Deferred financing costs | 0 | (751)
Proceeds from sale of common stock | 0 | 183,164
Purchases of treasury stock | (5,419) | (1,032)
Investment in / capital contributions from subsidiaries | 0 | 0
Other | (55) | 0
Net cash provided by (used in) financing activities | (474) | 86,073
Increase in cash and cash equivalents | 2,559 | 9,667
Beginning of period | 11,226 | 9,730
End of period | 13,785 | 19,397
Intercompany Eliminations [Member] |  |
Cash flows from operating activities: |  |
Net income (loss) | (49,103) | 37,327
Adjustments to reconcile net income to cash provided by operating activities: |  |
Equity in loss of subsidiaries | 49,103 | (37,327)
Depreciation, depletion and amortization | 0 | 0
Gain on extinguishment of debt |  | 0
Impairment | 0 | 0
Deferred income taxes | 0 | 0
Derivative instruments | 0 | 0
Stock-based compensation expenses | 0 | 0
Deferred financing costs amortization and other | 0 | 0
Working capital and other changes: |  |
Change in accounts receivable | (45,756) | (97,263)
Change in inventory | 0 | 0
Change in prepaid expenses | 0 | 0
Change in other current assets | 0 | 0
Change in other assets | 0 | 0
Change in accounts payable, interest payable and accrued liabilities | 45,756 | 97,263
Change in other current liabilities | 0 | 0
Change in other liabilities |  | 0
Net cash provided by (used in) operating activities | 0 | 0
Cash flows from investing activities: |  |
Capital expenditures | 0 | 0
Derivative settlements | 0 | 0
Advances from joint interest partners | 0 | 0
Net cash used in investing activities | 0 | 0
Cash flows from financing activities: |  |
Proceeds from revolving credit facility | 0 | 0
Principal payments on revolving credit facility | 0 | 0
Repurchase of senior unsecured notes |  | 0
Deferred financing costs |  | 0
Proceeds from sale of common stock |  | 0
Purchases of treasury stock | 0 | 0
Investment in / capital contributions from subsidiaries | 0 | 0
Other | 0 |
Net cash provided by (used in) financing activities | 0 | 0
Increase in cash and cash equivalents | 0 | 0
Beginning of period | 0 | 0
End of period | 0 | 0
Parent/Issuer [Member] |  |
Cash flows from operating activities: |  |
Net income (loss) | 23,825 | (64,455)
Adjustments to reconcile net income to cash provided by operating activities: |  |
Equity in loss of subsidiaries | (49,103) | 37,327
Depreciation, depletion and amortization | 0 | 0
Gain on extinguishment of debt |  | (7,016)
Impairment | 0 | 0
Deferred income taxes | (14,638) | (8,096)
Derivative instruments | 0 | 0
Stock-based compensation expenses | 6,498 | 6,547
Deferred financing costs amortization and other | 3,665 | 1,701
Working capital and other changes: |  |
Change in accounts receivable | 51,230 | (85)
Change in inventory | 0 | 0
Change in prepaid expenses | (59) | 139
Change in other current assets | (2) | 0
Change in other assets | 0 | 77
Change in accounts payable, interest payable and accrued liabilities | (13,321) | (122,242)
Change in other current liabilities | 0 | 0
Change in other liabilities |  | 0
Net cash provided by (used in) operating activities | 8,095 | (156,103)
Cash flows from investing activities: |  |
Capital expenditures | 0 | 0
Derivative settlements | 0 | 0
Advances from joint interest partners | 0 | 0
Net cash used in investing activities | 0 | 0
Cash flows from financing activities: |  |
Proceeds from revolving credit facility | 0 | 0
Principal payments on revolving credit facility | 0 | 0
Repurchase of senior unsecured notes |  | (22,308)
Deferred financing costs |  | 0
Proceeds from sale of common stock |  | 183,164
Purchases of treasury stock | (5,419) | (1,032)
Investment in / capital contributions from subsidiaries | (2,610) | (4,408)
Other | (55) |
Net cash provided by (used in) financing activities | (8,084) | 155,416
Increase in cash and cash equivalents | 11 | (687)
Beginning of period | 166 | 777
End of period | 177 | 90
Combined Guarantor Subsidiaries [Member] |  |
Cash flows from operating activities: |  |
Net income (loss) | 49,103 | (37,327)
Adjustments to reconcile net income to cash provided by operating activities: |  |
Equity in loss of subsidiaries | 0 | 0
Depreciation, depletion and amortization | 126,666 | 122,449
Gain on extinguishment of debt |  | 0
Impairment | 2,682 | 3,562
Deferred income taxes | 30,675 | (19,533)
Derivative instruments | (56,075) | (14,375)
Stock-based compensation expenses | 210 | 183
Deferred financing costs amortization and other | 1,275 | 3,365
Working capital and other changes: |  |
Change in accounts receivable | (27,952) | 96,353
Change in inventory | (3,679) | 349
Change in prepaid expenses | 341 | 102
Change in other current assets | (108) | 4
Change in other assets | (4) | 0
Change in accounts payable, interest payable and accrued liabilities | (26,375) | (39,077)
Change in other current liabilities | 2,945 | (6,000)
Change in other liabilities |  | (3)
Net cash provided by (used in) operating activities | 99,704 | 110,052
Cash flows from investing activities: |  |
Capital expenditures | (96,047) | (103,411)
Derivative settlements | (7,960) | 73,313
Advances from joint interest partners | (759) | (257)
Net cash used in investing activities | (104,766) | (30,355)
Cash flows from financing activities: |  |
Proceeds from revolving credit facility | 246,000 | 214,000
Principal payments on revolving credit facility | (241,000) | (287,000)
Repurchase of senior unsecured notes |  | 0
Deferred financing costs |  | (751)
Proceeds from sale of common stock |  | 0
Purchases of treasury stock | 0 | 0
Investment in / capital contributions from subsidiaries | 2,610 | 4,408
Other | 0 |
Net cash provided by (used in) financing activities | 7,610 | (69,343)
Increase in cash and cash equivalents | 2,548 | 10,354
Beginning of period | 11,060 | 8,953
End of period | $ 13,608 | $ 19,307

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- Definition The portion of profit or loss for the period, net of income taxes, which is attributable to the parent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Net Income -URI http://asc.fasb.org/extlink&oid=51831255 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(22)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(18)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Other Comprehensive Income -URI http://asc.fasb.org/extlink&oid=51831270 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(20)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition The net cash outflow or inflow from derivative instruments during the period, which are classified as investing activities, excluding those designated as hedging instruments. + References No definition available. + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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- Definition Amount of cash outflow to satisfy an employee's income tax withholding obligation as part of a net-share settlement of a share-based award. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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- Definition The cash outflow for exploration and development of oil and gas properties. It includes cash payments related to development of oil and gas wells drilled at previously untested geologic structures (to determine the presence of oil or gas) and wells drilled at sites where the presence of oil or gas has already been established (to extract the oil or gas). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3213-108585 + Details
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- Definition The cash inflow from an entity that is affiliated with the entity by means of direct or indirect ownership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 + Details
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- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 + Details
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- Definition The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3098-108585 + Details
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- Definition The cash outflow for the settlement of obligation drawn from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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- Definition The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 + Details
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