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Fair Value (Narrative) (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Other real estate carried at fair value less cost to sell $ 0 $ 0  
Other real estate, adjustments to carrying value less costs to sell charged to earnings 0 0  
Loans Held-for-Sale      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Gain (losses) from changes in fair value included in earnings (25,000) (163,000) $ (237,000)
Obligations of State and Political Subdivisions      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Total gains (losses) included in earnings attributable to changes in fair value 70,000 (93,000)  
Fair Value, Measurements, Recurring      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Securities 1,596,832,000 1,761,669,000  
Fair Value, Measurements, Recurring | Obligations of State and Political Subdivisions      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Securities 768,875,000 777,852,000  
Fair Value, Measurements, Recurring | MBS/CMO      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Securities 645,040,000 714,681,000  
Fair Value, Measurements, Recurring | Significant Unobservable  Inputs (Level 3)      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Securities 1,059,000 989,000  
Fair Value, Measurements, Recurring | Significant Unobservable  Inputs (Level 3) | Obligations of State and Political Subdivisions      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Securities 75,000 83,000  
Fair Value, Measurements, Recurring | Significant Unobservable  Inputs (Level 3) | MBS/CMO      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Securities $ 984,000 $ 906,000