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Deposits - Components of Deposits (Detail) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Deposits, by Component, Alternative [Abstract]    
Demand, non-interest bearing $ 4,683,030 $ 4,459,790
Demand, interest bearing 6,644,398 6,488,406
Savings, including money market deposit accounts 4,894,267 5,322,390
Time Deposits 723,024 507,338
Total deposits $ 16,944,719 $ 16,777,924