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Regulatory Capital Matters (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Common equity tier 1 capital ratio
Actual, Amount	$ 235,252	$ 222,892
Actual, Ratio	12.47%	12.16%
Requirement for Capital Adequacy Purposes, Amount	$ 84,920	$ 82,478
Requirement for Capital Adequacy Purposes, Ratio	4.50%	4.50%
Total risk based capital ratio
Actual, Amount	$ 251,756	$ 238,742
Actual, Ratio	13.34%	13.03%
Requirement for Capital Adequacy Purposes, Amount	$ 150,969	$ 146,628
Requirement for Capital Adequacy Purposes, Ratio	8.00%	8.00%
Tier 1 risk based capital ratio
Actual, Amount	$ 237,534	$ 225,150
Actual, Ratio	12.59%	12.28%
Requirement for Capital Adequacy Purposes, Amount	$ 113,227	$ 109,971
Requirement for Capital Adequacy Purposes, Ratio	6.00%	6.00%
Tier 1 leverage ratio
Actual, Amount	$ 237,534	$ 225,150
Actual, Ratio	10.27%	9.91%
Requirement for Capital Adequacy Purposes, Amount	$ 92,489	$ 90,900
Requirement for Capital Adequacy Purposes, Ratio	4.00%	4.00%
Farmers National Banc Corp
Common equity tier 1 capital ratio
Actual, Amount	$ 221,877	$ 210,409
Actual, Ratio	11.79%	11.51%
Requirement for Capital Adequacy Purposes, Amount	$ 84,686	$ 82,242
Requirement for Capital Adequacy Purposes, Ratio	4.50%	4.50%
To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 122,325	$ 118,795
To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	6.50%	6.50%
Total risk based capital ratio
Actual, Amount	$ 236,099	$ 224,001
Actual, Ratio	12.55%	12.26%
Requirement for Capital Adequacy Purposes, Amount	$ 150,554	$ 146,209
Requirement for Capital Adequacy Purposes, Ratio	8.00%	8.00%
To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 188,192	$ 182,761
To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	10.00%	10.00%
Tier 1 risk based capital ratio
Actual, Amount	$ 221,877	$ 210,409
Actual, Ratio	11.79%	11.51%
Requirement for Capital Adequacy Purposes, Amount	$ 112,915	$ 109,656
Requirement for Capital Adequacy Purposes, Ratio	6.00%	6.00%
To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 150,554	$ 146,209
To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	8.00%	8.00%
Tier 1 leverage ratio
Actual, Amount	$ 221,877	$ 210,409
Actual, Ratio	9.61%	9.32%
Requirement for Capital Adequacy Purposes, Amount	$ 92,372	$ 90,324
Requirement for Capital Adequacy Purposes, Ratio	4.00%	4.00%
To be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 115,465	$ 112,905
To be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	5.00%	5.00%

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The amount of total capital as defined in the regulations.

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