Name:	pfis_CommercialLoanAndCommercialRealEstatePortfolioDeemedNonlifeSustaining
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The percentage of the commercial loan and commercial real estate portfolio that was deemed as non-life sustaining and subject to shutdown.

No definition available.

Name:	pfis_CommercialLoanAndCommercialRealEstatePortfolioDeemedNonlifeSustainingPercentage
Namespace Prefix:	pfis_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Percentage of financing receivable modified by loan deferrals of total loan portfolio.

No definition available.

Name:	pfis_FinancingReceivableModificationsLoanDeferralPercentageOfTotalLoansPortfolio
Namespace Prefix:	pfis_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Amount of financing receivable loan deferral principal balance.

No definition available.

Name:	pfis_FinancingReceivableModificationsLoanDeferralUnpaidPrincipalBalance
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases under paycheck protection program.

No definition available.

Name:	pfis_InterestAndFeeIncomeLoansAndLeasesPaycheckProtectionProgram
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The value of loan receivable balances where payment deferrals have been granted.

No definition available.

Name:	pfis_LoanReceivableBalancesWherePaymentDeferralsWereGranted
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The number of business relationships where payment deferrals were granted.

No definition available.

Name:	pfis_LoanReceivableBusinessRelationshipsPaymentDeferralsGranted
Namespace Prefix:	pfis_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The maximum loan receivable Payment deferred period.

No definition available.

Name:	pfis_LoansReceivablePaymentDeferralPeriodMaximum
Namespace Prefix:	pfis_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

The number of full-service community banking offices.

No definition available.

Name:	pfis_NumberOfFullServiceBankingOffices
Namespace Prefix:	pfis_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The average Paycheck Protection Program loan receivable amount.

No definition available.

Name:	pfis_PaycheckProtectionProgramAverageLoanReceivableAmount
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The amount of Paycheck Protection Program loans processed.

No definition available.

Name:	pfis_PaycheckProtectionProgramLoanReceivableamount
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

The number of applications processed for the Paycheck Protection Program.

No definition available.

Name:	pfis_PaycheckProtectionProgramNumberOfApplications
Namespace Prefix:	pfis_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

The amount of Small Business Administration processing fee revenue.

No definition available.

Name:	pfis_SmallBusinessAdministrationProcessingFees
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Name:	us-gaap_Goodwill
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Data Type:	xbrli:monetaryItemType
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Period Type:	instant

Amount of expense related to estimated loss from loan and lease transactions.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
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-Publisher FASB
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