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Deposits - Components of Deposits (Detail) - USD ($)
$ in Thousands
Mar. 31, 2023
Dec. 31, 2022
Deposits, by Component, Alternative [Abstract]    
Demand, non-interest bearing $ 3,487,517 $ 1,885,045
Demand, interest bearing 5,791,302 8,476,027
Savings, including money market deposit accounts 2,943,992 3,546,015
Time 5,500,806 4,249,866
Total deposits $ 17,723,617 $ 18,156,953