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Commitments and Contingencies (Tables) | 12 Months Ended
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Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Commitments Contractual Obligation Maturities | Our future construction program and other commitments, capacity and energy agreement commitments, coal purchase and coal delivery contract commitments and contractual land easements payments as of December 31, 2021 are as follows:
(in thousands) | Construction Program and Other Commitments |  | Capacity and Energy Requirements |  | Coal Purchase Commitments |  | Land Easement Payments
2022 | $ | 889 |  |  | $ | 20,390 |  |  | $ | 22,793 |  |  | $ | 1,364 |
2023 | 14,678 |  |  | 11,854 |  |  | 23,955 |  |  | 1,388 |
2024 | 879 |  |  | 11,828 |  |  | 23,955 |  |  | 1,412 |
2025 | 886 |  |  | 11,784 |  |  | 24,369 |  |  | 1,437 |
2026 | 479 |  |  | 11,753 |  |  | 25,103 |  |  | 1,432 |
Beyond 2026 | 6,697 |  |  | 109,003 |  |  | 428,304 |  |  | 27,461 |
Total | $ | 24,508 |  |  | $ | 176,612 |  |  | $ | 548,479 |  |  | $ | 34,494 |

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- Definition Tabular disclosure of contractual obligation by timing of payment due. Includes, but is not limited to, long-term debt obligation, lease obligation, and purchase obligation. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher SEC -Name Regulation S-K (SK) -Number 229 -Section 303 -Paragraph (a) -Subparagraph (5) + Details
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