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Cover Page - shares
6 Months Ended
Jun. 30, 2024
Aug. 02, 2024
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2024  
Document Transition Report false  
Entity File Number 1-12709  
Entity Registrant Name Tompkins Financial Corp  
Entity Incorporation, State or Country Code NY  
Entity Tax Identification Number 16-1482357  
Entity Address, Address Line One P.O. Box 460  
Entity Address, City or Town Ithaca  
Entity Address, State or Province NY  
Entity Address, Postal Zip Code 14851  
City Area Code 888  
Local Phone Number 503-5753  
Title of 12(b) Security Common Stock, $0.10 par value  
Trading Symbol TMP  
Security Exchange Name NYSEAMER  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Small Business false  
Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   14,396,247
Entity Central Index Key 0001005817  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2024