XML 33 R23.htm IDEA: XBRL DOCUMENT
v3.4.0.3

Summary of significant accounting policies - Additional Information (Details) | 3 Months Ended
--- | ---
Mar. 31, 2016 Office
Summary of significant accounting policies |
Number of full-service community banking offices | 24

X
- Definition Number Of Full Service Banking Offices + References No definition available. + Details
Name: | pfis_NumberOfFullServiceBankingOffices
Namespace Prefix: | pfis_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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