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v3.25.2

Other assets - Unpaid Principal Balances (Details) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2025 | Dec. 31, 2024
Other assets |  |
Unpaid principal balances of mortgage loans serviced for others | $ 177.9 | $ 185.2

X
- Definition Principal amount outstanding of mortgaged loans serviced for others. + References No definition available. + Details
Name: | pfis_UnpaidPrincipalBalancesOfMortgageLoansServicedForOthers
Namespace Prefix: | pfis_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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