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Investments in Tax Credits Structures (Details) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2041 | Dec. 31, 2026 | Dec. 31, 2025
Investment Program, Proportional Amortization Method, Elected [Line Items] |  |  |  |  |  |
Carrying values of investments | $ 187,200 | $ 207,300 |  |  |  |
Carrying values of investments, location | Prepaid Expense and Other Assets | Prepaid Expense and Other Assets |  |  |  |
Proportional amortization | $ 20,000 | $ 16,500 | $ 10,900 |  |  |
Proportional amortization, statements of income location | Income Tax Expense (Benefit) |  |  |  |  |
Proportional amortization, statements of cash flows, location not disclosed | proportional amortization |  |  |  |  |
Unfunded contingent commitment | $ 81,200 | 107,900 |  |  |  |
Impairment losses on LIHTC investments | 0 |  |  |  |  |
Investment in Solar Tax Credit, Amortization Expense | $ 101 | $ 21 |  |  |  |
Subsequent Event |  |  |  |  |  |
Investment Program, Proportional Amortization Method, Elected [Line Items] |  |  |  |  |  |
LIHTC commitments |  |  |  | $ 10,400 | $ 5,500 | $ 65,300

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