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Loan and Lease Receivables - Additional Information (Details) - USD ($)
$ in Thousands
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]            
Total loans and leases $ 5,159,947   $ 4,533,511      
Loans held for sale pledged as security for borrowings 2,100,000   1,900,000      
Allowance for loan and lease losses 62,436 $ 59,458 55,012 $ 61,719 $ 65,590 $ 66,347
Acquired Impaired Loans            
Accounts Notes And Loans Receivable [Line Items]            
Allowance for loan and lease losses 2,500   3,200      
Installment and Other            
Accounts Notes And Loans Receivable [Line Items]            
Total loans and leases 1,268   1,322      
Overdraft deposits reclassified as loans 1,300   445,000      
Allowance for loan and lease losses 11 $ 10 9 $ 9 $ 12 $ 15
U.S. Government Guaranteed Loans            
Accounts Notes And Loans Receivable [Line Items]            
Total loans and leases 139,100   231,200      
Discount on the unguaranteed portion of government guaranteed loans $ 27,900   $ 28,300