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Investment Securities (Non-Cash OTTI Credit Losses Recognized in Earnings) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Investments Securities [Abstract]    
Balance of credit-related OTTI, Beginning $ 2,043 $ 2,244
Reduction for increases in cash flows expected to be collected (202) (201)
Balance of credit-related OTTI, Ending $ 1,841 $ 2,043