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Investment Securities (Details 5) - USD ($)
$ in Thousands
Mar. 31, 2024
Mar. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 215,231 $ 223,095
Allowance for Credit Losses on Held-to-Maturity Securities (29) (42)
Moody's, Aaa Rating [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 157,897 162,072
Moody's, Aa1/Aa2/Aa3 Rating [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 55,297 57,072
Moody's, A1/A2 Rating [Member]    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 2,066 $ 3,993