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Deposits, Composition (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Deposits, by Type [Abstract]    
Noninterest-bearing demand deposits $ 8,504,077 $ 7,661,728
Savings 4,410,198 3,650,085
Interest-bearing demand 7,019,782 6,090,869
Money market 7,185,111 7,322,769
Time deposits 1,347,262 1,757,030
Total deposits $ 28,466,430 $ 26,482,481