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Investments - Narrative (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Schedule of Equity Method Investments [Line Items] |  |  |
SERP investments at fair value | $ 2,467 |  | $ 2,290
CoBank |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
SERP investments at fair value | 10,100 |  | $ 10,100
Other nonoperating income (expense) | $ 300 | $ 100 |
Percentage of patronage credit paid in cash | 88.00% |  |
Percentage of patronage credit paid in share | 12.00% |  |

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