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Investment Securities - Cost and Equity Method Investments (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Investment [Line Items] |  |  |
Federal home loan bank stock | $ 17,754,000 | $ 11,197,000 |
Federal reserve bank stock | 14,653,000 | 14,653,000 |
Equity Securities, FV-NI | 2,089,000 | 1,859,000 |
Equity Securities without Readily Determinable Fair Value, Amount | 15,921,000 | 14,725,000 |
Alternative Investment | 45,885,000 | 44,657,000 |
Other Investments and Securities, at Cost | 96,302,000 | 87,091,000 |
Equity Securities without Readily Determinable Fair Value, Upward Price Adjustment, Annual Amount | $ 0 | $ 871,000 |
equity investment shares sold | 116,722 | 22,160 | 86,770
Proceeds from Sale of Federal Home Loan Bank Stock | $ 11,672,000 | $ 2,216,000 | $ 8,677,000
equity investment purchased, shares | 182,289 | 0 | 0
Gain on equity securities, net | $ 971,000 | $ 2,955,000 | $ 5,011,000
Alternative Investment, income recognized | 371,000 | 2,400,000 | 4,500,000
Investments [Member] |  |  |
Investment [Line Items] |  |  |
Gain on equity securities, net | $ 600,000 | $ 601,000 | $ 552,000

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