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Fair Value Measurements - Fair Value Measurements at Reporting Date and Gain (Losses) from Fair Value Changes. (Details) - Non-Recurring - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Individually evaluated loans | $ 7,471 | $ 40,681
Gain (losses) from fair value changes on impaired loans | 249 | 826
Other real estate owned | 14,314 | 131
Gain (losses) from fair value changes on other real estate owned | 43 | 23
(Level 1) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Individually evaluated loans | 0 | 0
Other real estate owned | 0 | 0
(Level 2) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Individually evaluated loans | 0 | 0
Other real estate owned | 0 | 0
(Level 3) |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Individually evaluated loans | 7,471 | 40,681
Other real estate owned | $ 14,314 | $ 131

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