v3.25.3
Document And Entity Information
Oct. 22, 2025
Document Information [Line Items]  
Entity, Registrant Name Farmers National Banc Corp.
Document, Type 8-K
Document, Period End Date Oct. 22, 2025
Entity, Incorporation, State or Country Code OH
Entity, File Number 001-35296
Entity, Tax Identification Number 34-1371693
Entity, Address, Address Line One 20 South Broad Street
Entity, Address, Address Line Two P.O. Box 555
Entity, Address, City or Town Canfield
Entity, Address, State or Province OH
Entity, Address, Postal Zip Code 44406-0555
City Area Code 330
Local Phone Number 533-3341
Written Communications true
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, No Par Value
Trading Symbol FMNB
Security Exchange Name NASDAQ
Entity, Emerging Growth Company false
Amendment Flag false
Entity, Central Index Key 0000709337