XML 10 R1.htm IDEA: XBRL DOCUMENT  v2.3.0.11
Document And Entity Information (USD $)
In Billions, except Share data
 6 Months Ended
Jun. 30, 2011
Apr. 30, 2011
Jun. 30, 2010
Entity Registrant Name PEOPLES FINANCIAL SERVICES CORP.    
Entity Central Index Key 0001056943    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Accelerated Filer    
Entity Public Float     $ 77,307,854
Entity Common Stock, Shares Outstanding   3,147,481  
Document Fiscal Year Focus 2011    
Document Fiscal Period Focus Q2    
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Jun. 30, 2011