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Securities (Narrative) (Details) | Jun. 30, 2024 USD ($) security | Mar. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Mar. 31, 2023 USD ($)
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Securities [Abstract] |  |  |  |
Debt securities in unrealized loss position in the less than twelve months category | security | 9 |  |  |
Debt securities in unrealized loss position in the twelve months or more category | security | 331 |  |  |
ACL on debt securities available for sale | $ | $ 0 | $ 0 | $ 0 | $ 0
Pledged Financial Instruments, Not Separately Reported, Securities | $ | $ 345,310,000 |  | $ 344,204,000 |

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