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Deposits - Certificates of deposits and Scheduled maturities of time deposits (Details) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Deposits    
Aggregate amounts of certificates of deposits in denominations of $250,000 or more $ 576.5 $ 603.2
Traditional, out-of-market brokered deposits $ 150.1 $ 325.0