XML 28 R30.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Investment securities - Additional Information (Detail) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2015 Security | Mar. 31, 2014 | Dec. 31, 2014 Security
Schedule of Available-for-sale Securities [Line Items] |  |  |
Carrying value of securities pledged | $ 207,895,000 us-gaap_AvailableForSaleSecuritiesPledgedAsCollateral |  | 216,192,000 us-gaap_AvailableForSaleSecuritiesPledgedAsCollateral
Number of investment securities held | 63 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition |  | 52 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition
State and Municipals, Tax-Exempt [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of investment securities held | 36 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_InvestmentTypeAxis = us-gaap_NontaxableMunicipalBondsMember |  | 16 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_InvestmentTypeAxis = us-gaap_NontaxableMunicipalBondsMember
Number of securities in continuous unrealized loss positions 12 months or longer | 2 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger / us-gaap_InvestmentTypeAxis = us-gaap_NontaxableMunicipalBondsMember |  | 4 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger / us-gaap_InvestmentTypeAxis = us-gaap_NontaxableMunicipalBondsMember
State and Municipals, Taxable [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of investment securities held | 1 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_InvestmentTypeAxis = us-gaap_TaxableMunicipalBondsMember |  | 1 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_InvestmentTypeAxis = us-gaap_TaxableMunicipalBondsMember
Number of securities in continuous unrealized loss positions 12 months or longer | 1 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger / us-gaap_InvestmentTypeAxis = us-gaap_TaxableMunicipalBondsMember |  | 1 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger / us-gaap_InvestmentTypeAxis = us-gaap_TaxableMunicipalBondsMember
Credit Concentration Risk [Member] | Stockholders' Equity, Total [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Maximum percentage of stockholders' equity exceeded for securities of any individual issuer | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_StockholdersEquityTotalMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember |  | 10.00%us-gaap_ConcentrationRiskPercentage1 / us-gaap_ConcentrationRiskByBenchmarkAxis = us-gaap_StockholdersEquityTotalMember / us-gaap_ConcentrationRiskByTypeAxis = us-gaap_CreditConcentrationRiskMember
U.S. Government-Sponsored Enterprises State and Municipals [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of investment securities held | 3 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |  | 9 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Number of securities in continuous unrealized loss positions 12 months or longer | 1 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |  | 2 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Other-than-temporary impairments recognized | $ 0 us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsHeldtomaturitySecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember | $ 0 us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsHeldtomaturitySecurities / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember |
Mortgage-Backed Securities, U.S. Government-Sponsored Enterprises [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Number of investment securities held | 23 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember |  | 26 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Number of securities in continuous unrealized loss positions 12 months or longer | 2 pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger / us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis = us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember |  |

X
- Definition Number of securities in continuous unrealized loss position. + References No definition available. + Details
Name: | pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition
Namespace Prefix: | pfis_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number Of Securities In Continuous Unrealized Loss Position 12 Months Or Longer + References No definition available. + Details
Name: | pfis_NumberOfSecuritiesInContinuousUnrealizedLossPosition12MonthsOrLonger
Namespace Prefix: | pfis_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The fair value of available-for-sale securities that serve as collateral for borrowings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5086-111524 + Details
Name: | us-gaap_AvailableForSaleSecuritiesPledgedAsCollateral
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 21 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13537-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6404-108592 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13531-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 275 -SubTopic 10 -Section 50 -Paragraph 18 -URI http://asc.fasb.org/extlink&oid=6927468&loc=d3e6351-108592 + Details
Name: | us-gaap_ConcentrationRiskPercentage1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount by which the fair value of an investment in debt securities categorized as Held-to-maturity is less than the amortized cost basis or carrying amount of that investment at the balance sheet date and the decline in fair value is deemed to be other than temporary, before considering whether or not such amount is recognized in earnings or other comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27232-111563 + Details
Name: | us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsHeldtomaturitySecurities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CreditConcentrationRiskMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_NontaxableMunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_TaxableMunicipalBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis=us-gaap_USGovernmentSponsoredEnterprisesDebtSecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |