Note 15 - Regulatory Capital Matters - Schedule of Regulatory Capital (Details) $ in Thousands	Jun. 30, 2025 USD ($)	Dec. 31, 2024 USD ($)
Common equity tier 1, capital adequacy, ratio	0.045
Risk based capital, capital adequacy, ratio	0.08
Tier 1 risk based capital, capital adequacy, ratio	0.06
Tier 1 leverage, capital adequacy, ratio	0.04
Bank [Member]
Common equity tier 1, actual, amount	$ 472,048	$ 442,747
Common equity tier 1, actual, ratio	0.1267	0.1188
Common equity tier 1, capital adequacy, amount	$ 167,621	$ 167,712
Common equity tier 1, capital adequacy, ratio	0.045	0.045
Common equity tier 1, well capitalized, amount	$ 242,120	$ 242,251
Common equity tier 1, well capitalized, ratio	0.065	0.065
Risk based capital, actual, amount	$ 511,909	$ 480,173
Risk based capital, actual, ratio	0.1374	0.1288
Risk based capital, capital adequacy, amount	$ 297,994	$ 298,155
Risk based capital, capital adequacy, ratio	0.08	0.08
Risk based capital, well capitalized, amount	$ 372,492	$ 372,694
Risk based capital, well capitalized, ratio	0.10	0.10
Tier 1 risk based capital, actual, amount	$ 472,048	$ 442,747
Tier 1 risk based capital, actual, ratio	0.1267	0.1188
Tier 1 risk based capital, capital adequacy, amount	$ 223,495	$ 223,616
Tier 1 risk based capital, capital adequacy, ratio	0.06	0.06
Tier 1 risk based capital, well capitalized, amount	$ 297,994	$ 298,155
Tier 1 risk based capital, well capitalized, ratio	0.08	0.08
Tier 1 leverage, actual, amount	$ 472,048	$ 442,747
Tier 1 leverage, actual, ratio	0.0912	0.0855
Tier 1 leverage, capital adequacy, amount	$ 206,974	$ 207,066
Tier 1 leverage, capital adequacy, ratio	0.04	0.04
Tier 1 leverage, well capitalized, amount	$ 258,718	$ 258,832
Tier 1 leverage, well capitalized, ratio	0.05	0.05
Parent Company [Member]
Common equity tier 1, actual, amount	$ 432,040	$ 415,825
Common equity tier 1, actual, ratio	0.1156	0.1114
Common equity tier 1, capital adequacy, amount	$ 168,120	$ 167,991
Common equity tier 1, capital adequacy, ratio	0.045	0.045
Risk based capital, actual, amount	$ 561,901	$ 543,250
Risk based capital, actual, ratio	0.1504	0.1455
Risk based capital, capital adequacy, amount	$ 298,880	$ 298,651
Risk based capital, capital adequacy, ratio	0.08	0.08
Tier 1 risk based capital, actual, amount	$ 450,040	$ 433,825
Tier 1 risk based capital, actual, ratio	0.1205	0.1162
Tier 1 risk based capital, capital adequacy, amount	$ 224,160	$ 223,988
Tier 1 risk based capital, capital adequacy, ratio	0.06	0.06
Tier 1 leverage, actual, amount	$ 450,040	$ 433,825
Tier 1 leverage, actual, ratio	0.0867	0.0836
Tier 1 leverage, capital adequacy, amount	$ 207,544	$ 207,544
Tier 1 leverage, capital adequacy, ratio	0.04	0.04

FARMERS NATIONAL BANC CORP /OH/ 10-Q