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Summary of Significant Accounting Policies (Narrative) (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
USD ($)
Segment
Dec. 31, 2022
USD ($)
Significant Accounting Policies [Line Items]    
Days past due when loans are generally charged-off in full, in days 120 days  
Number of identified portfolio segments | Segment 6  
Number of designated segments | Segment 6  
Days past due when loans are generally placed on nonaccrual status, in days 90 days  
Other real estate owned $ 142 $ 19
FHLB stock 11,000 13,000
FRB stock 6,400 6,400
Equity method investments, asset amount 314,357 262,992
Tax credit investments 68,253 55,568
Investment related liabilities 14,000 4,800
Other Assets [Member]    
Significant Accounting Policies [Line Items]    
Tax credit investments 68,300 55,600
Small Business Investment Companies [Member] | Other Assets [Member]    
Significant Accounting Policies [Line Items]    
Equity method investments, asset amount $ 16,900 $ 12,900
Core Deposits [Member]    
Significant Accounting Policies [Line Items]    
Estimated average life 9 years 6 months  
Other Intangible Assets [Member]    
Significant Accounting Policies [Line Items]    
Estimated average life 20 years  
Minimum [Member]    
Significant Accounting Policies [Line Items]    
Standby letters of credit outstanding original term, in years 1 year  
Loans placed on non-accrual status and criticized assets with exposure $ 2,000  
Minimum [Member] | Building And Building Improvements [Member]    
Significant Accounting Policies [Line Items]    
Premise and equipment, estimated useful lives, in years 15 years  
Minimum [Member] | Software, Furniture And Equipment [Member]    
Significant Accounting Policies [Line Items]    
Premise and equipment, estimated useful lives, in years 3 years  
Maximum [Member]    
Significant Accounting Policies [Line Items]    
Standby letters of credit outstanding original term, in years 5 years  
Maximum [Member] | Building And Building Improvements [Member]    
Significant Accounting Policies [Line Items]    
Premise and equipment, estimated useful lives, in years 39 years  
Maximum [Member] | Software, Furniture And Equipment [Member]    
Significant Accounting Policies [Line Items]    
Premise and equipment, estimated useful lives, in years 10 years