XML 66 R1.htm IDEA: XBRL DOCUMENT v3.20.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2020
May 28, 2020
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2020  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q1  
Entity Registrant Name PATHFINDER BANCORP, INC.  
Entity Central Index Key 0001609065  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock Shares Outstanding   4,753,883
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity File Number 001-36695  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 38-3941859  
Entity Address, Address Line One 214 West First Street  
Entity Address, City or Town Oswego  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 13126  
City Area Code 315  
Local Phone Number 343-0057  
Document Quarterly Report true  
Document Transition Report false  
Title of each class Common Stock, $0.01 par value  
Trading Symbol PBHC  
Name of each exchange on which registered NASDAQ