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Regulatory & Capital Matters - Capital Levels and Industry Defined Regulatory Minimums (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Common equity tier 1 capital to risk weighted assets    
Actual $ 277,199 $ 251,477
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable $ 162,512 $ 158,020
Common equity tier 1 capital to risk weighted assets, Ratio    
Actual (as a percent) 11.94% 11.14%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 7.00% 7.00%
Total capital to risk weighted assets, Amount    
Actual at period end $ 331,178 $ 327,886
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable $ 243,855 $ 236,944
Total capital to risk weighted assets, Ratio    
Risk-based capital ratio (as a percent) 14.26 14.53
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 10.500 10.500
Tier 1 capital to risk weighted assets, Amount    
Actual $ 302,199 $ 308,102
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable $ 197,440 $ 191,858
Tier 1 capital to risk weighted assets, Ratio    
Actual (as a percent) 13.01 13.65
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 8.500 8.500
Tier 1 capital to average assets, Amount    
Actual $ 302,199 $ 308,102
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable $ 118,393 $ 103,303
Tier 1 capital to average assets, Ratio    
Tier 1 capital leverage ratio (as a percent) 10.21 11.93
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 4.00 4.00
Subsidiaries [Member]    
Common equity tier 1 capital to risk weighted assets    
Actual $ 318,466 $ 322,496
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable 162,128 157,315
Minimum Required to Be Well Capitalized $ 150,548 $ 146,078
Common equity tier 1 capital to risk weighted assets, Ratio    
Actual (as a percent) 13.75% 14.35%
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 7.00% 7.00%
Minimum Required to Be Well Capitalized (as a percent) 6.50% 6.50%
Total capital to risk weighted assets, Amount    
Actual at period end $ 347,408 $ 342,280
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable 243,186 235,978
Minimum Required to Be Well Capitalized $ 231,605 $ 224,741
Total capital to risk weighted assets, Ratio    
Risk-based capital ratio (as a percent) 15.00 15.23
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 10.500 10.500
Minimum Required to Be Well Capitalized (as a percent) 10.00 10.00
Tier 1 capital to risk weighted assets, Amount    
Actual $ 318,466 $ 322,496
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable 196,870 191,026
Minimum Required to Be Well Capitalized $ 185,289 $ 179,789
Tier 1 capital to risk weighted assets, Ratio    
Actual (as a percent) 13.75 14.35
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 8.500 8.500
Minimum Required to Be Well Capitalized (as a percent) 8.00 8.00
Tier 1 capital to average assets, Amount    
Actual $ 318,466 $ 322,496
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable 118,609 103,199
Minimum Required to Be Well Capitalized $ 148,262 $ 128,998
Tier 1 capital to average assets, Ratio    
Tier 1 capital leverage ratio (as a percent) 10.74 12.50
Minimum Required for Capital Adequacy Purposes with Capital Conservation Buffer if applicable (as a percent) 4.00 4.00
Minimum Required to Be Well Capitalized (as a percent) 5.00 5.00