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Short-term Borrowings - Narrative (Details) - Line of Credit - USD ($) | Sep. 30, 2025 | Jul. 31, 2025
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Short-Term Debt [Line Items] |  |
Aggregate lines of credit | $ 148,000,000.0 |
Weighted average interest rate | 5.33% |
CoBank, ACB |  |
Short-Term Debt [Line Items] |  |
Aggregate lines of credit | $ 20,000,000.0 |
CoBank, ACB | Tidewater |  |
Short-Term Debt [Line Items] |  |
Aggregate lines of credit |  | $ 20,000,000.0

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