Long-term debt - Fixed and adjustable rate information (Details) - item	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021
Short-term borrowings
Number of FHLB advances entered	0	0

The number of federal home loan bank (FHLB) advances entered during the period.

No definition available.

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