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Derivative Financial Instruments (Location and Fair Value of Derivative Instruments) (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Derivatives not designated as hedging instruments, fair value    
Derivatives $ 70,440,000 $ 68,581,000
Derivatives $ 61,147,000 $ 61,419,000
Interest rate swap agreements on loans with commercial loan customers | Not Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments Held 8 2
Derivative Asset, Notional Amount $ 122,930,000 $ 65,352,000
Derivative Asset, Average Remaining Maturity 6 years 7 days 4 years 9 months 29 days
Derivatives $ 1,766,000 $ 1,010,000
Derivative Liability, Number of Instruments Held 83 82
Derivative Liability, Notional Amount $ 715,539,000 $ 678,881,000
Derivative Liability, Average Remaining Maturity 6 years 8 months 8 days 7 years 7 months 9 days
Derivatives $ 61,147,000 $ 61,419,000
Interest rate swap agreements on loans with third-party counter parties | Not Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments Held 91 84
Derivative Asset, Notional Amount $ 838,469,000 $ 744,233,000
Derivative Asset, Average Remaining Maturity 6 years 7 months 2 days 7 years 4 months 13 days
Derivatives $ 59,381,000 $ 60,409,000
Interest rate swap related to AFS securities | Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments Held 11 11
Derivative Asset, Notional Amount $ 12,500,000 $ 12,500,000
Derivative Asset, Average Remaining Maturity 8 years 9 months 10 days 9 years 3 months 10 days
Derivatives $ 534,000 $ 602,000
Interest rate swap related to FHLB borrowings | Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Notional Amount $ 106,500,000  
Derivative Asset, Average Remaining Maturity 2 years 8 months 12 days  
Interest rate swap related to wholesale funding | Designated as Hedging Instrument    
Derivatives not designated as hedging instruments, fair value    
Derivative Asset, Number of Instruments Held 29 11
Derivative Asset, Notional Amount $ 312,655,000 $ 116,400,000
Derivative Asset, Average Remaining Maturity 4 years 2 months 19 days 2 years 10 months 17 days
Derivatives $ 8,759,000 $ 6,560,000