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Cover
May 05, 2020
May 01, 2020
Cover [Abstract]    
Document Type 8-K  
Amendment Flag false  
Document Period End Date May 05, 2020  
Entity File Number 1-12709  
Entity Registrant Name Tompkins Financial Corporation  
Entity Central Index Key 0001005817  
Entity Tax Identification Number 16-1482357  
Entity Incorporation, State or Country Code NY  
Entity Address, Address Line One   118 E. Seneca Street
Entity Address, Address Line Two   PO Box 460
Entity Address, City or Town   Ithaca
Entity Address, State or Province   NY
Entity Address, Postal Zip Code 14851  
City Area Code   (607)
Local Phone Number   273-3210
Written Communications false  
Soliciting Material false  
Pre-commencement Tender Offer false  
Pre-commencement Issuer Tender Offer false  
Title of 12(b) Security Common Stock, $0.10 par value  
Trading Symbol TMP  
Security Exchange Name NYSEAMER  
Entity Emerging Growth Company false