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Securities, Held-to-Maturity Securities Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]      
Allowance for credit losses beginning balance $ 2 $ 3  
Provision for (recovery of) credit loss expense (1) (1)  
Allowance for credit losses ending balance $ 1 $ 2 $ 3
Cumulative loss rate 0.01% 0.02% 0.03%
ASC 326 [Member]      
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]      
Allowance for credit losses beginning balance   $ 3  
Allowance for credit losses ending balance     $ 3