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Securities - Additional Information (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]        
Proceeds from sale of available-for-sale debt securities, including legacy securities   $ 515,200,000 $ 102,100,000 $ 96,700,000
Gross gains from sale of securities     300,000 2,400,000
Gross losses from sale of securities     600,000 1,300,000
Securities transferred from available for sale to held to maturity $ 210,800,000      
Securities transferred from available for sale to held to maturity, net realized gains $ 800,000      
Unrealized losses   248,662,000 20,857,000  
Fair value of mortgage backed securities of government sponsored entities   1,812,522,000 1,144,606,000  
Other assets of Federal Home Loan Bank and Federal Reserve Bank   45,600,000    
Accrued interest receivable on AFS debt securities   7,000,000 3,400,000  
Accrued interest receivable on HTM debt securities   $ 1,300,000 $ 1,000,000  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Other assets Other assets  
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]   Other assets Other assets  
Shares held (in shares)   71,617,852 58,504,250  
Common Class B | Visa        
Debt Securities, Available-for-sale [Line Items]        
Shares held (in shares)   11,330    
Common Class A | Visa        
Debt Securities, Available-for-sale [Line Items]        
Conversion rate of Class A stock for each share of Class B stock (in shares)   $ 1.5991    
Shares of class A Visa stock issued (in shares)   18,117    
Asset Pledged as Collateral        
Debt Securities, Available-for-sale [Line Items]        
Securities pledged as collateral   $ 484,200,000    
CRA - qualified debt securities        
Debt Securities, Available-for-sale [Line Items]        
Gross gains from sale of securities       $ 100,000
Gross losses from sale of securities   1,100,000 $ 200,000  
Equity securities   8,200,000 9,300,000  
Mortgage-backed securities and collateralized mortgage obligations of U.S. government-sponsored entities        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses   223,083,000 20,309,000  
Fair value of mortgage backed securities of government sponsored entities   1,314,171,000 967,834,000  
Held-to-maturity securities, allowance for credit loss   0    
Private mortgage-backed securities and collateralized mortgage obligations        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses   12,831,000 420,000  
Fair value of mortgage backed securities of government sponsored entities   $ 155,722,000 43,268,000  
Average credit support percentage   24.00%    
Allowance for credit losses on AFS debt securities   $ 0    
Collateralized loan obligations        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses   10,251,000 124,000  
Fair value of mortgage backed securities of government sponsored entities   302,904,000 132,663,000  
Allowance for credit losses on AFS debt securities   $ 0    
Collateralized loan obligations | Standard & Poor's, AAA Rating        
Debt Securities, Available-for-sale [Line Items]        
Number of positions held, percentage of total   38.00%    
Collateralized loan obligations | Standard & Poor's, AA Rating        
Debt Securities, Available-for-sale [Line Items]        
Number of positions held, percentage of total   25.00%    
Obligations of state and political subdivisions        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses   $ 1,731,000 1,000  
Fair value of mortgage backed securities of government sponsored entities   24,229,000 $ 499,000  
Allowance for credit losses on AFS debt securities   0    
Other debt securities        
Debt Securities, Available-for-sale [Line Items]        
Unrealized losses   427,000    
Fair value of mortgage backed securities of government sponsored entities   $ 11,459,000    
Average credit support percentage   8.00%    
Allowance for credit losses on AFS debt securities   $ 0