Name:	pfis_FinancingReceivablesAllowanceForLoansLossesChargeOffIncreaseDecreaseDueToPartialWriteDownOfNonAccrualCommercialRelationshipOne
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The amount of increase (decrease) in non accrual loans due to charge off of small business line of credit.

No definition available.

Name:	pfis_FinancingReceivablesAllowanceForLoansLossesChargeOffIncreaseDecreaseDueToSmallBusinessLinesOfCredit
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount of increase (decrease) in charge offs due to commercial real estate loan transferred to other real estate owned.

No definition available.

Name:	pfis_FinancingReceivablesAllowanceForLoansLossesChargeOffIncreaseDecreaseDueToTransferFromCommercialRealEstateToOtherRealEstateLoan
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
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The amount of increase (decrease) in charge offs due to a partial write down of a non-accrual commercial relationship.

No definition available.

Name:	pfis_FinancingReceivablesAllowanceForLoansLossesChargeOffsIncreaseDecreaseDueToPartialWriteDownOfNonAccrualCommercialRelationship
Namespace Prefix:	pfis_
Data Type:	xbrli:monetaryItemType
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The amount of decrease in loan due to upgrading a credit line to credit enhancement and satisfactory repayment history of financing receivables.

No definition available.

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

The number of unrelated commercial relationships.

No definition available.

Name:	pfis_FinancingReceivablesNumberOfCommercialRelationships
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Data Type:	xbrli:integerItemType
Balance Type:	na
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The percentage of security provided by the SBA guarantee to the financing receivables.

No definition available.

Name:	pfis_FinancingReceivablesPercentageOfSecurityProvidedBySBGuarantee
Namespace Prefix:	pfis_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

The amount of increase (decrease) in loans and leases receivable due to relationship experiencing cash flow and capital issues.

No definition available.

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

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_AccountsNotesAndLoansReceivableLineItems
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Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=123577603&loc=d3e5074-111524

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Data Type:	xbrli:monetaryItemType
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialPortfolioSegmentMember
Namespace Prefix:
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Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_CommercialRealEstatePortfolioSegmentMember
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Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ResidentialPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_ConsumerPortfolioSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_PassMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_InternalCreditAssessmentAxis=us-gaap_SpecialMentionMember
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