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Securities - Carrying value of other investment securities (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Dec. 31, 2020
Other investment securities |  |
Carrying Value | $ 160,568 | $ 160,443
Impairment on other investment securities | 0 |
Federal Home Loan Bank stock |  |
Other investment securities |  |
Carrying Value | 16,283 | 15,083
Federal Reserve Bank Stock |  |
Other investment securities |  |
Carrying Value | 129,716 | 129,871
Investment in unconsolidated subsidiaries |  |
Other investment securities |  |
Carrying Value | 3,563 | 4,941
Other nonmarketable investment securities |  |
Other investment securities |  |
Carrying Value | $ 11,006 | $ 10,548

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