XML 134 R120.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Tax Credit Investments (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 USD ($)
Effective Income Tax Rate Reconciliation, Tax Credit, Amount [Abstract] |
Investment | $ 936
Federal tax credits | $ 367

X
- Definition Federal Tax Credits + References No definition available. + Details
Name: | fraf_FederalTaxCredits
Namespace Prefix: | fraf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment + References No definition available. + Details
Name: | fraf_Investment
Namespace Prefix: | fraf_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxReconciliationTaxCreditsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration