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Investment Securities - Trading (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]          
Trading securities portfolio $ 692   $ 692   $ 964
Debt securities, trading, realized gains (losses) $ (25) $ 4 $ 200 $ 100