XML 76 R66.htm IDEA: XBRL DOCUMENT
v3.23.2

Credit Quality Indicators (Details 4) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2023 USD ($)
Risks and Uncertainties [Abstract] |
Par value of acquired loans at acquisition | $ 797,616
Net purchase discount | (55,958)
Allowance for credit losses of PCD loans | (999)
Purchase price of loans at acqisition | $ 740,659

X
- Definition Allowance for credit losses of PCD loans. + References No definition available. + Details
Name: | fmnb_AllowanceForCreditLossesOfPCDLoans
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Net purchase discount. + References No definition available. + Details
Name: | fmnb_NetPurchaseDiscount
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Par value of acquired loans at acquisition. + References No definition available. + Details
Name: | fmnb_ParValueOfAcquiredLoansAtAcquisition
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for the purchase of loan receivable arising from the financing of goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482740/230-10-45-13 + Details
Name: | us-gaap_PaymentsToAcquireLoansReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_RisksAndUncertaintiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration