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Securities - Carrying value of other investment securities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
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Other investment securities |  |
Carrying Value | $ 192,043 | $ 179,717
Federal Home Loan Bank stock |  |
Other investment securities |  |
Carrying Value | 22,836 | 15,085
Federal Reserve Bank Stock |  |
Other investment securities |  |
Carrying Value | 150,261 | 150,261
Investment in unconsolidated subsidiaries |  |
Other investment securities |  |
Carrying Value | 3,563 | 3,563
Other nonmarketable investment securities |  |
Other investment securities |  |
Carrying Value | $ 15,383 | $ 10,808

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- Definition Amount of investments classified as other. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(12)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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