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Investment Securities - Narrative (Details)
 1 Months Ended 6 Months Ended
Jul. 13, 2023
USD ($)
Jul. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Jun. 30, 2023
USD ($)
security
Jun. 30, 2022
USD ($)
Jul. 07, 2023
USD ($)
Dec. 31, 2022
USD ($)
security
Debt Securities, Available-for-sale [Line Items]              
Held-to-maturity, allowance for credit Loss       $ 0     $ 0
Transfer of securities from available-for-sale to held-to-maturity at fair value     $ 357,500,000        
Net unrealized pre-tax loss       85,293,000     $ 90,543,000
Proceeds from sale of available-for-sale securities       $ 0 $ 0    
Number of investment securities in unrealized loss position | security       396     407
Number of investment securities in unrealized loss position longer than 12 months | security       373      
Number of investment securities in unrealized loss position less than 12 months | security       23      
Debt securities, available-for-sale unrealized loss position, allowance for credit loss       $ 0     $ 0
Derivative, notional amount       11,500,000      
Visa Inc. Class B common stock              
Debt Securities, Available-for-sale [Line Items]              
Carrying value of securities carried at cost       0     $ 0
Subsequent event              
Debt Securities, Available-for-sale [Line Items]              
Proceeds from sale of available-for-sale securities   $ 82,700,000          
Debt securities, available for sale loss   $ 2,800,000          
Subsequent event | Interest rate swap              
Debt Securities, Available-for-sale [Line Items]              
Derivative, notional amount           $ 101,800,000  
Subsequent event | Visa Inc. Class B common stock              
Debt Securities, Available-for-sale [Line Items]              
Carrying value of securities carried at cost $ 0            
Equity securities, FV-NI gain $ 2,800,000            
Accumulated Other Comprehensive Income (Loss), Net of Tax              
Debt Securities, Available-for-sale [Line Items]              
Net unrealized pre-tax loss       $ 14,800,000