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Fair Value - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Mar. 31, 2023
Dec. 31, 2022
Mar. 31, 2022
Dec. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]                
Allowance for credit losses $ 300,555,000 $ 288,003,000 $ 300,555,000 $ 288,003,000 $ 298,711,000 $ 303,671,000 $ 280,507,000 $ 107,341,000
Provision for credit losses 14,787,000 9,165,000 28,224,000 117,901,000        
Other real estate owned property write-downs 100,000 100,000 100,000 300,000        
Valuation allowance for loan servicing rights with impairments 0   0          
Valuation allowance for loan servicing rights with impairments, impairments (recoveries) during period 0 0 $ 0 0        
Past due period of mortgage loans held for sale     90 days          
Interest income for residential loans held for sale 300,000 700,000 $ 500,000 1,200,000        
Fair Value on Non-recurring Basis                
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]                
Other real estate 1,600,000   1,600,000          
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 127,900,000   127,900,000     92,000,000    
Allowance for credit losses 29,400,000   29,400,000     $ 21,500,000    
Provision for credit losses $ 7,900,000 $ 12,800,000 $ 19,800,000 $ 28,600,000