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Fair value estimates (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Aggregate amortized cost | $ 488,750 | $ 541,707
Available for sale, Fair Value | 458,144 | 512,563
Level 3 |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available for sale, Fair Value |  | 988
Level 3 | Other Assets. |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Other real estate owned | 1,300 | 1,700
Corporate debt securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Aggregate amortized cost | 16,734 | 24,287
Available for sale, Fair Value | $ 17,056 | $ 24,794

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