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SECURITIES, Held-to-Maturity Securities Allowance for Credit Losses (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2023
Dec. 31, 2022
Debt Securities, Held-to-Maturity, Allowance for Credit Loss [Roll Forward]      
Allowance for credit losses beginning balance   $ 0  
Provision for (recovery of) credit loss expense $ (1) (1)  
Allowance for credit losses ending balance $ 2 2 $ 0
Cumulative loss rate 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