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Fair Value - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Dec. 31, 2020
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]                
Allowance for credit losses $ 302,254,000 $ 107,868,000 $ 302,254,000 $ 107,868,000 $ 288,003,000 $ 107,341,000 $ 109,444,000 $ 131,388,000
Provision for credit losses 11,287,000 (4,613,000) 118,101,000 (26,898,000)        
Other real estate owned property write-downs 200,000 0 600,000 23,000        
Valuation allowance for loan servicing rights with impairments 0   0          
Valuation allowance for loan servicing rights with impairments, impairments (recoveries) during period 0 (5,000) (46,000) (1,307,000)        
Valuation allowance for loan servicing rights with impairments 0 100,000 $ 0 100,000 $ 0 46,000 $ 105,000 $ 1,407,000
Past due period of mortgage loans held for sale     90 days          
Interest income for residential loans held for sale 400,000 400,000 $ 1,600,000 1,100,000        
Fair Value on Non-recurring Basis                
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]                
Other real estate 300,000   300,000          
Pooled trust preferred securities                
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]                
Fair value, transfer amount     11,100,000          
Impaired Commercial and Commercial Real Estate Loans                
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]                
Principal amount of impaired commercial and commercial real estate loans 95,400,000   95,400,000     21,000,000    
Allowance for credit losses 21,500,000   21,500,000     $ 2,100,000    
Provision for credit losses $ 7,300,000 $ 100,000 $ 20,100,000 $ 100,000