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Securities, Securities Pledged (Details) - Asset Pledged as Collateral [Member] - USD ($)
$ in Millions
Dec. 31, 2022
Jun. 30, 2022
Deposits in Excess of FDIC Insurance Limits [Member]    
Securities Pledged [Abstract]    
Securities, fair value $ 843.3 $ 892.9
Potential Borrowings at Federal Reserve Bank Discount Window [Member]    
Securities Pledged [Abstract]    
Securities, fair value $ 16.8 $ 17.4