XML 86 R71.htm IDEA: XBRL DOCUMENT
v3.22.4

Loans (Details Textual) |  | 12 Months Ended
--- | --- | ---
Nov. 01, 2021 USD ($) | Dec. 31, 2022 USD ($) Customer | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Financing Receivable Modifications [Line Items] |  |  |  |
Total troubled debt restructurings |  | $ 5,600,000 | $ 3,900,000 |
Commitments to lend additional amounts to borrowers classified as troubled debt restructurings |  | 0 | 0 |
Allowance adjustment charge offs |  | 66,000 | 129,000 | $ 65,000
Increase in the allowance for loan losses as a result of the allowance |  | 64,000 | 127,000 | 65,000
Loans originated |  | 1,568,399,000 | 1,555,497,000 |
Maximum commercial loan and commercial real estate relationships |  | 1,000,000 |  |
Unfunded commitments |  | 603,000,000 |  |
Anticipated credit losses |  | 1,400,000 |  |
Payments to Acquire Loans Receivable |  | 478,200,000 |  |
Loans held for sale |  | 4,000,000.0 |  |
PCD Loans |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Business combination acquired loans with fair value | $ 34,300,000 |  |  |
Credit discount | 1,300,000 |  |  |
Noncredit discount | $ 1,100,000 |  |  |
Small Business Administration (SBA), CARES Act, Paycheck Protection Program |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Total troubled debt restructurings |  | $ 256,400,000 |  |
Number of business customers facilitated assistance | Customer |  | 2,134 |  |
Payments received from forgiveness of loans |  | $ 107,900,000 |  |
Small Business Administration (SBA), CARES Act, Paycheck Protection Program | PPP Loan Originated In 2020 |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Payments received from forgiveness of loans |  | $ 256,400,000 |  |
Amortizated over remaining life of loan |  |  |  | $ 11,000
Percentage of payments received from forgiveness of loans |  | 99.90% |  |
Small Business Administration (SBA), CARES Act, Paycheck Protection Program | PPP Loan Originated In 2021 |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Payments received from forgiveness of loans |  | $ 107,700,000 |  |
Pending approval of forgiveness of loans |  |  | 42,000 |
Amortizated over remaining life of loan |  |  | 188,000 |
Loans originated |  |  | 230,000 |
Percentage of payments received from forgiveness of loans |  | 99.80% |  |
Payment Deferral |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Number of months offered, deferrals |  | 3 months |  |
Minimum | Payment Deferral |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Number of months offered, deferrals |  | 3 months |  |
Maximum [Member] | Payment Deferral |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Number of months offered, deferrals |  | 12 months |  |
Troubled debt restructurings |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Specific reserves to customers |  | $ 110,000 | $ 109,000 |
Contractual Interest Rate Reduction | Minimum |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Reduction of the notes stated interest rate |  | 0.25% |  |
Contractual Interest Rate Reduction | Maximum [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Reduction of the notes stated interest rate |  | 4.075% |  |
Extended Maturity | Minimum |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Maturity period loans |  | 22 days |  |
Extended Maturity | Maximum [Member] |  |  |  |
Financing Receivable Modifications [Line Items] |  |  |  |
Maturity period loans |  | 361 months |  |

X
- Definition Allowance for loan losses period increase decrease. + References No definition available. + Details
Name: | fmnb_AllowanceForLoanLossesPeriodIncreaseDecrease
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Anticipated credit losses. + References No definition available. + Details
Name: | fmnb_AnticipatedCreditLosses
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business combination acquired loans with fair value. + References No definition available. + Details
Name: | fmnb_BusinessCombinationAcquiredLoansWithFairValue
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Business combination credit discount. + References No definition available. + Details
Name: | fmnb_BusinessCombinationCreditDiscount
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Business combination noncredit discount. + References No definition available. + Details
Name: | fmnb_BusinessCombinationNoncreditDiscount
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Commercial loan and commercial real estate risk maximum. + References No definition available. + Details
Name: | fmnb_CommercialLoanAndCommercialRealEstateRiskMaximum
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Debt instrument interest rate reduction percentage. + References No definition available. + Details
Name: | fmnb_DebtInstrumentInterestRateReductionPercentage
Namespace Prefix: | fmnb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Debt instrument maturity date length of extension period. + References No definition available. + Details
Name: | fmnb_DebtInstrumentMaturityDateLengthOfExtensionPeriod
Namespace Prefix: | fmnb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of business customers. + References No definition available. + Details
Name: | fmnb_NumberOfBusinessCustomers
Namespace Prefix: | fmnb_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of months offered for deferral payments. + References No definition available. + Details
Name: | fmnb_NumberOfMonthsOfferedForDeferralPayments
Namespace Prefix: | fmnb_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Payments received from forgiveness of loans. + References No definition available. + Details
Name: | fmnb_PaymentsReceivedFromForgivenessOfLoans
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Pending approval of forgiveness of loans. + References No definition available. + Details
Name: | fmnb_PendingApprovalOfForgivenessOfLoans
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Percentage of payments received from forgiveness of loans. + References No definition available. + Details
Name: | fmnb_PercentageOfPaymentsReceivedFromForgivenessOfLoans
Namespace Prefix: | fmnb_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Unfunded commitments. + References No definition available. + Details
Name: | fmnb_UnfundedCommitments
Namespace Prefix: | fmnb_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The aggregate amount of recurring noncash expense charged against earnings in the period to allocate the cost of assets over their estimated remaining economic lives. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI https://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585 + Details
Name: | us-gaap_AdjustmentForAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesIndividuallyEvaluatedForImpairment1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableModificationsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI https://asc.fasb.org/extlink&oid=123577603&loc=SL6953676-111524 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivableModificationsRecordedInvestment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Reflects the amount of the write-down related to a troubled debt restructuring. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18845-111554 + Details
Name: | us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of unfunded portion of contractual agreement to lend funds to borrower for financing receivable modified as troubled debt restructuring. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=121585226&loc=d3e18794-111554 + Details
Name: | us-gaap_LoansAndLeasesReceivableImpairedCommitmentToLend
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount, before valuation allowance, of financing receivable classified as held-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 948 -SubTopic 310 -Section 45 -Paragraph 1 -URI https://asc.fasb.org/extlink&oid=124265262&loc=d3e48678-111004 + Details
Name: | us-gaap_LoansReceivableHeldForSaleAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amortized cost, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 5 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=124255953&loc=SL82919230-210447 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 + Details
Name: | us-gaap_NotesReceivableNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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 -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (a) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3213-108585 + Details
Name: | us-gaap_PaymentsToAcquireLoansReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=fmnb_PCDLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoansInsuredOrGuaranteedByGovernmentAuthoritiesAxis=fmnb_SmallBusinessAdministrationSBACARESActPaycheckProtectionProgramMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=fmnb_PaycheckProtectionProgramLoanOriginatedInTwoThousandTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AccountsNotesLoansAndFinancingReceivableByReceivableTypeAxis=fmnb_PaycheckProtectionProgramLoanOriginatedInTwoThousandTwentyOneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis=us-gaap_PaymentDeferralMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=fmnb_TroubledDebtRestructuringsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ContractualInterestRateReductionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_LoanRestructuringModificationAxis=us-gaap_ExtendedMaturityMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |