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v3.19.3.a.u2

Long-Term Debt Narrative (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2019 | Jun. 30, 2019
Debt Instrument [Line Items] |  |  |  |  |
Gain (loss) on extinguishment of debt | $ (7,614,000) | $ (54,118,000) | $ (2,129,000) |  |
Senior Notes due March 2027 at 7.25% |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 500,000,000 |  |  |  |
Stated rate, debt instrument | 7.25% |  |  |  |
5.875% Senior Notes due 2022 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 894,307,000 | 1,294,307,000 |  |  |
Purchase of outstanding debt | 400,000,000 | 411,375,000 | 144,318,000 |  |
Gain (loss) on extinguishment of debt | $ (7,614,000) | (15,320,000) | (110,000) |  |
Stated rate, debt instrument | 5.875% |  |  | 5.875% |
Senior Notes due March 2026 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount | $ 400,000,000 |  |  |  |
Stated rate, debt instrument | 6.50% |  |  |  |
Senior Notes due April 2023 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Purchase of outstanding debt | $ 500,000,000 |  |  |  |
Gain (loss) on extinguishment of debt |  | $ (38,798,000) |  |  |
Stated rate, debt instrument | 8.00% |  |  |  |
Senior Notes Due April 2020 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Purchase of outstanding debt |  |  | $ 74,470,000 |  |
Stated rate, debt instrument |  |  | 8.25% |  |
Senior Notes Due March 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Purchase of outstanding debt |  |  | $ 20,611,000 |  |
Stated rate, debt instrument |  | 6.375% | 6.375% |  |
Senior Notes Due April 2020 and Senior Notes Due March 2021 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Gain (loss) on extinguishment of debt |  |  | $ (2,019,000) |  |
Revolving Credit Facility |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount |  |  |  |  | $ 160,000,000
CNXM | Senior Notes due March 2026 |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Debt instrument, face amount |  | $ 400,000,000 |  |  |
Unamortized bond discount |  | $ 6,000,000 |  |  |

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