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Regulatory Matters (Schedule Of The Total Risk-based, Tier 1 Risk-based And Tier 1 Leverage Requirements) (Details) - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Franklin Financial Services Corporation [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Common Equity Tier 1 Risk-based Capital Ratio: Ratio | 13.96% | 14.06% | [1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio | 4.50% | 4.50% | [1]
Tier 1 Risk-based Capital Ratio: Ratio | 13.96% | 14.06% | [2]
Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio | 6.00% | 6.00% | [2]
Total Risk-based Capital Ratio: Ratio | 15.21% | 15.31% | [3]
Total Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio | 8.00% | 8.00% | [3]
Tier 1 Leverage Ratio: Ratio | 9.78% | 9.73% | [4]
Tier 1 Leverage Ratio: Adequately Capitalized Minimum: Ratio | 4.00% | 4.00% | [4]
Common Equity Tier 1 Risk-based Capital Ratio: Amount | $ 115,760 | $ 112,315 | [1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum, Amount | 37,328 | 35,953 | [1]
Tier 1 Risk-based Capital Ratio: Amount | 115,760 | 112,315 | [2]
Tier 1 Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount | 49,771 | 47,938 | [2]
Total Risk-based Capital Ratio: Amount | 126,129 | 122,324 | [3]
Total Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount | 66,361 | 63,917 | [3]
Tier 1 Leverage Ratio: Amount | 115,760 | 112,315 | [4]
Tier 1 Leverage Ratio: Minimum to be Adequately Capitalized Amount | $ 47,323 | $ 46,175 | [4]
Farmers & Merchants Trust Company [Member] |  |  |
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items] |  |  |
Common Equity Tier 1 Risk-based Capital Ratio: Ratio | 13.80% | 13.93% | [1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio | 4.50% | 4.50% | [1]
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio | 6.50% | 6.50% | [1]
Tier 1 Risk-based Capital Ratio: Ratio | 13.80% | 13.93% | [2]
Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio | 6.00% | 6.00% | [2]
Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio | 8.00% | 8.00% | [2]
Total Risk-based Capital Ratio: Ratio | 15.06% | 15.19% | [3]
Total Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio | 8.00% | 8.00% | [3]
Total Risk-based Capital Ratio: Well Capitalized Minimum: Ratio | 10.00% | 10.00% | [3]
Tier 1 Leverage Ratio: Ratio | 9.68% | 9.64% | [4]
Tier 1 Leverage Ratio: Adequately Capitalized Minimum: Ratio | 4.00% | 4.00% | [4]
Tier 1 Leverage Ratio: Well Capitalized Minimum: Ratio | 5.00% | 5.00% | [4]
Common Equity Tier 1 Risk-based Capital Ratio: Amount | $ 115,326 | $ 111,496 | [1]
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum, Amount | 37,605 | 36,010 | [1]
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum, Amount | 54,319 | 52,014 | [1]
Tier 1 Risk-based Capital Ratio: Amount | 115,326 | 111,496 | [2]
Tier 1 Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount | 50,140 | 48,013 | [2]
Tier 1 Risk-based Capital Ratio: Minimum to be Well Capitalized Amount | 66,854 | 64,018 | [2]
Total Risk-based Capital Ratio: Amount | 125,825 | 121,521 | [3]
Total Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount | 66,854 | 64,018 | [3]
Total Risk-based Capital Ratio: Minimum to be Well Capitalized Amount | 83,567 | 80,022 | [3]
Tier 1 Leverage Ratio: Amount | 115,326 | 111,496 | [4]
Tier 1 Leverage Ratio: Minimum to be Adequately Capitalized Amount | 47,675 | 46,242 | [4]
Tier 1 Leverage Ratio: Minimum to be Well Capitalized Amount | $ 59,593 | $ 57,802 | [4]
[1] | Common equity Tier 1 capital / total risk-weighted assets
[2] | Tier 1 capital / total risk-weighted assets
[3] | Total risk-based capital / total risk-weighted assets
[4] | Tier 1 capital / average quarterly assets

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