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Shareholders' Equity (Schedule of Consolidated and Affiliate Bank Actual Capital and Minimum Required Levels) (Details)
$ in Thousands
Dec. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Tier 1 (Core) Capital (to Average Assets)    
Minimum capital conservation buffer 0.025  
Bank    
Total Capital (to Risk Weighted Assets)    
Actual Amount of Total Capital (to Risk Weighted Assets) $ 488,409 $ 447,090
Actual Ratio of Total Capital (to Risk Weighted Assets) 0.1400 0.1282
Minimum Required For Capital Adequacy Purposes: Amount, Total Capital $ 279,088 $ 278,997
Minimum Required For Capital Adequacy Purposes: Ratio, Total Capital (to Risk Weighted Assets) [1] 0.0800 0.0800
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount, Total Capital (to Risk Weighted Assets) $ 348,860 $ 348,746
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Ratio, Total Capital (to Risk Weighted Assets) 0.1000 0.1000
Tier 1 (Core) Capital (to Risk Weighted Assets)    
Actual Amount of Tier 1 Capital (to Risk Weighted Assets) $ 460,936 $ 430,812
Actual Ratio of Tier 1 Capital (to Risk Weighted Assets) 0.1321 0.1235
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Risk Weighted Assets) $ 209,316 $ 209,248
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Risk Weighted Assets) [1] 0.0600 0.0600
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount, Tier 1 Capital (to Risk Weighted Assets) $ 279,088 $ 278,997
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Ratio, Tier 1 Capital (to Risk Weighted Assets) 0.0800 0.0800
Common Tier 1 (CET 1) Capital Ratio (to Risk Weighted Assets)    
Actual Amount of Common Tier 1 Capital (to Risk Weighted Assets) $ 460,936 $ 430,812
Actual Ratio of Common Tier 1 Capital (to Risk Weighted Assets) 13.21% 12.35%
Minimum Required For Capital Adequacy Purposes: Amount, Common Tier 1 Capital (to Risk Weighted Assets) $ 156,987 $ 156,936
Minimum Required For Capital Adequacy Purposes: Ratio, Common Tier 1 Capital (to Risk Weighted Assets) [1] 4.50% 4.50%
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount, Common Tier 1 Capital (to Risk Weighted Assets) $ 226,759 $ 226,685
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Ratio, Common Tier 1 Capital (to Risk Weighted Assets) 6.50% 6.50%
Tier 1 (Core) Capital (to Average Assets)    
Actual Amount of Tier 1 Capital (to Average Assets) $ 460,936 $ 430,812
Actual Ratio of Tier 1 Capital (to Average Assets) 0.0956 0.1027
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Average Assets) $ 192,915 $ 167,765
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Average Assets) [1] 0.0400 0.0400
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Amount, Tier 1 Capital (to Average Assets) $ 241,143 $ 209,706
Minimum Required To Be Well-Capitalized Under Prompt Corrective Action Regulations: Ratio, Tier 1 Capital (to Average Assets) 0.0500 0.0500
Minimum capital conservation buffer 0.025  
Consolidated    
Total Capital (to Risk Weighted Assets)    
Actual Amount of Total Capital (to Risk Weighted Assets) $ 554,168 $ 499,020
Actual Ratio of Total Capital (to Risk Weighted Assets) 0.1586 0.1428
Minimum Required For Capital Adequacy Purposes: Amount, Total Capital $ 279,554 $ 279,499
Minimum Required For Capital Adequacy Purposes: Ratio, Total Capital (to Risk Weighted Assets) [1] 0.0800 0.0800
Tier 1 (Core) Capital (to Risk Weighted Assets)    
Actual Amount of Tier 1 Capital (to Risk Weighted Assets) $ 486,695 $ 442,742
Actual Ratio of Tier 1 Capital (to Risk Weighted Assets) 0.1393 0.1267
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Risk Weighted Assets) $ 209,665 $ 209,624
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Risk Weighted Assets) [1] 0.0600 0.0600
Common Tier 1 (CET 1) Capital Ratio (to Risk Weighted Assets)    
Actual Amount of Common Tier 1 Capital (to Risk Weighted Assets) $ 470,931 $ 427,295
Actual Ratio of Common Tier 1 Capital (to Risk Weighted Assets) 13.48% 12.23%
Minimum Required For Capital Adequacy Purposes: Amount, Common Tier 1 Capital (to Risk Weighted Assets) $ 157,249 $ 157,218
Minimum Required For Capital Adequacy Purposes: Ratio, Common Tier 1 Capital (to Risk Weighted Assets) [1] 4.50% 4.50%
Tier 1 (Core) Capital (to Average Assets)    
Actual Amount of Tier 1 Capital (to Average Assets) $ 486,695 $ 442,742
Actual Ratio of Tier 1 Capital (to Average Assets) 0.1007 0.1053
Minimum Required For Capital Adequacy Purposes: Amount, Tier 1 Capital (to Average Assets) $ 193,343 $ 168,195
Minimum Required For Capital Adequacy Purposes: Ratio, Tier 1 Capital (to Average Assets) [1] 0.0400 0.0400
Minimum capital conservation buffer 0.025  
[1] Excludes 2.5% capital conservation buffer.