Regulatory Matters (Schedule Of The Total Risk-based, Tier 1 Risk-based And Tier 1 Leverage Requirements) (Details) $ in Thousands	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2015
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Risk-based Capital Ratio: Ratio		0.10
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	0.065%
Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	0.08		0.06
Total Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	0.10
Tier 1 Leverage Ratio: Ratio		0.06
Tier 1 Leverage Ratio: Well Capitalized Minimum: Ratio	0.05
Franklin Financial Services Corporation [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Risk-based Capital Ratio: Ratio	0.1422	0.1520
Tier 1 Risk-based Capital Ratio: Ratio	0.1422	0.1520
Total Risk-based Capital Ratio: Ratio	0.1721	0.1841
Tier 1 Leverage Ratio: Ratio	0.0895	0.0852
Common Equity Tier 1 Risk-based Capital Ratio: Amount	$ 156,468	$ 148,365
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum, Amount	49,529	43,927
Tier 1 Risk-based Capital Ratio: Amount	156,468	148,365
Tier 1 Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	66,039	58,569
Total Risk-based Capital Ratio: Amount	189,370	179,701
Total Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	88,051	78,092
Tier 1 Leverage Ratio: Amount	156,468	148,365
Tier 1 Leverage Ratio: Minimum to be Adequately Capitalized Amount	$ 69,937	$ 69,649
Bank [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Common Equity Tier 1 Risk-based Capital Ratio: Ratio	0.1463	0.1528
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	0.0450	0.0450
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	0.065%	0.065%
Tier 1 Risk-based Capital Ratio: Ratio	0.1463	0.1528
Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	0.0600	0.0600
Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	0.0800	0.0800
Total Risk-based Capital Ratio: Ratio	0.1588	0.1654
Total Risk-based Capital Ratio: Adequately Capitalized Minimum: Ratio	0.0800	0.0800
Total Risk-based Capital Ratio: Well Capitalized Minimum: Ratio	0.1000	0.1000
Tier 1 Leverage Ratio: Ratio	0.0921	0.0857
Tier 1 Leverage Ratio: Adequately Capitalized Minimum: Ratio	0.0400	0.0400
Tier 1 Leverage Ratio: Well Capitalized Minimum: Ratio	0.0500	0.0500
Common Equity Tier 1 Risk-based Capital Ratio: Amount	$ 160,975	$ 149,087
Common Equity Tier 1 Risk-based Capital Ratio: Adequately Capitalized Minimum, Amount	49,523	43,901
Common Equity Tier 1 Risk-based Capital Ratio: Well Capitalized Minimum, Amount	71,533	63,413
Tier 1 Risk-based Capital Ratio: Amount	160,975	149,087
Tier 1 Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	66,030	58,535
Tier 1 Risk-based Capital Ratio: Minimum to be Well Capitalized Amount	88,041	78,046
Total Risk-based Capital Ratio: Amount	174,754	161,335
Total Risk-based Capital Ratio: Minimum to be Adequately Capitalized Amount	88,041	78,046
Total Risk-based Capital Ratio: Minimum to be Well Capitalized Amount	110,051	97,558
Tier 1 Leverage Ratio: Amount	160,975	149,087
Tier 1 Leverage Ratio: Minimum to be Adequately Capitalized Amount	69,928	69,608
Tier 1 Leverage Ratio: Minimum to be Well Capitalized Amount	$ 87,411	$ 87,009

Tangible Capital Required For Well Capitalized To Tangible Assets

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Amount of total capital as defined by regulatory framework.

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Amount of minimum total risk-based capital required for capital adequacy as defined by regulatory framework.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of tangible capital as defined by regulatory framework.

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