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Deposits - Summary of Deposit Balances (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Deposits [Abstract]    
Non-interest-bearing checking accounts $ 1,733,157 $ 1,724,772
Interest-bearing checking and money market accounts 3,029,260 2,952,705
Savings deposits 830,143 804,451
Retail certificates of deposit less than $250,000 586,967 636,477
Retail certificates of deposit greater than $250,000 137,708 163,646
Total $ 6,317,235 $ 6,282,051