Name:	pfis_LiquidationExpenses
Namespace Prefix:	pfis_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Represents the range and weighted average of appraisal adjustments presented as a percent of the appraisal.

No definition available.

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

Represents the range and weighted average of liquidation expenses presented as a percent of the appraisal.

No definition available.

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

Fair value disclosure of unobservable input used for assets fair value measurement at the end of the period.

No definition available.

Name:	pfis_UnobservableInput
Namespace Prefix:	pfis_
Data Type:	xbrli:stringItemType
Balance Type:	na
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The technique used by the entity to measure fair value of assets at the end of the period.

No definition available.

Name:	pfis_ValuationTechnique
Namespace Prefix:	pfis_
Data Type:	xbrli:stringItemType
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Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258

Name:	us-gaap_AssetsFairValueDisclosure
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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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_FairValueInputsAssetsQuantitativeInformationLineItems
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Data Type:	xbrli:stringItemType
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Namespace Prefix:
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Name:	us-gaap_FairValueByMeasurementFrequencyAxis=us-gaap_FairValueMeasurementsNonrecurringMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
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Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
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Name:	us-gaap_FairValueByAssetClassAxis=pfis_ImpairedLoansMember
Namespace Prefix:
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