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Long-Term Obligations and Commitments, Maturity Schedules (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Annual Debt and Other Obligation Maturities [Abstract] |  |
Less: current portion | $ (2,026) | $ (13,749)
Total | 785,500 | $ 632,971
Long-Term Obligations, Excluding Financing Liability for Leased Facility [Member] |  |
Annual Debt and Other Obligation Maturities [Abstract] |  |
2020 | 6,260 |
2021 | 316,114 |
2022 | 3,495 |
2023 | 4,180 |
2024 | 553,006 |
Thereafter | 64,429 |
Subtotal | 947,484 |
Less: current portion | (2,026) |
Less: fixed and determinable interest | (28,014) |
Less: unamortized portion of debt discount | (137,975) |
Plus: lease liabilities | 17,235 |
Total | $ 796,704 |

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