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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesEstimatedUncollectible_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Acquisition expected to be uncollectible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquiredReceivablesEstimatedUncollectible_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Acquired Receivables, Estimated Uncollectible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal funds purchased</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collaborative Arrangement and Arrangement Other than Collaborative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ArrangementsAndNonarrangementTransactionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collaborative Arrangement and Arrangement Other than Collaborative [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentTransitionReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Transition Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ALLOWANCE FOR CREDIT LOSSES:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Credit Losses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance For Credit Losses [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Effects of Interest Rate Swap Agreements on Consolidated Statements of Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsGainLossInStatementOfFinancialPerformanceTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments, Gain (Loss) [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Provision for credit losses - loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision for Credit Losses-Loans*</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProvisionForLoanAndLeaseLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for credit losses-loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation Technique</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Valuation Technique [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total Securities Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities - available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdate202202Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASU 2022-02 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdate202202Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update 2022-02 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted average common shares outstanding including participating securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesIssuedBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Issued, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2026</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Two</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel1Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 1 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal funds purchased and securities sold under agreements to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Federal Funds Purchased and Securities Sold under Agreements to Repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition, Pro Forma Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Other Operating Assets and Liabilities, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Change in other assets and other liabilities, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInOtherOperatingCapitalNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Other Operating Assets and Liabilities, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ActivitiesInAllowanceForCreditLossesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Analysis of Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ActivitiesInAllowanceForCreditLossesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Activities In Allowance For Credit Losses Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ActivitiesInAllowanceForCreditLossesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tabular disclosure of activities disclosure in allowance for credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestAndDividendIncomeOperatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Income [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestAndDividendIncomeOperatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Dividend Income, Operating [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestAndDividendIncomeOperatingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest and Dividend Income, Operating.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_WeightedAverageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_WeightedAverageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value of Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noninterest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Revenue from Contract with Customer, Excluding Assessed Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueOfFederalHomeLoanBankAdvancesValuationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of Federal Home Loan Bank (FHLB) advances, valuation amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueOfFederalHomeLoanBankAdvancesValuationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Federal Home Loan Bank Advances Valuation Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueOfFederalHomeLoanBankAdvancesValuationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of Federal Home Loan Bank advances, valuation amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FeesAndCommissionsIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fees And Commissions Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FeesAndCommissionsIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fees And Commissions Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsRevolvingLoansAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for credit losses writeoffs revolving loans amortized cost basis.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsRevolvingLoansAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses Writeoffs Revolving Loans Amortized Cost Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsRevolvingLoansAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge-offs - Revolving Loans Amortized Cost Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Notional Amount and Fair Value of Interest Rate Swaps</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfDerivativeInstrumentsInStatementOfFinancialPositionFairValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfOtherDebt_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayment of other borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfOtherDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayments of Other Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Business Acquisitions By Acquisition [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfBusinessAcquisitionsByAcquisitionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Business Acquisitions, by Acquisition [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Servicing Rights net, March 31</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Servicing Asset, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Assets measured at fair value on a nonrecurring basis, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAsset_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income (Expense), Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Interest Income - Before Provision for Credit Losses*</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Consideration Paid and Amounts of Assets Acquired and Liabilities Assumed Recognized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfRecognizedIdentifiedAssetsAcquiredAndLiabilitiesAssumedTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Less Than Twelve Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12Months_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualWithRelationshipToEntityDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of Individual [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal funds sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Funds Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgingPurposeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pledging Purpose [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfSharesElectToReceiveInMergerAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of shares elect to receive in merger agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfSharesElectToReceiveInMergerAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Shares Elect To Receive In Merger Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfSharesElectToReceiveInMergerAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of shares elect to receive in merger agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseSubordinatedNotesAndDebentures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseSubordinatedNotesAndDebentures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Subordinated Notes and Debentures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivableRecordedInvestmentCreditQualityIndicatorTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Credit Quality Indicator [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionProFormaEarningsPerShareBasicAndDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic and Diluted Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionProFormaEarningsPerShareBasicAndDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Pro Forma Earnings Per Share Basic And Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionProFormaEarningsPerShareBasicAndDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisition pro forma earnings per share basic and diluted.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Receivable, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased During Period, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury stock repurchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesPeriodPastDueDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Asset, Aging</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesPeriodPastDueDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Aging [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MinimumNumberOfSharesToBeExchangedUnderTheAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Minimum number of shares to be exchanged under the agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MinimumNumberOfSharesToBeExchangedUnderTheAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum Number of Shares to be Exchanged Under the Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MinimumNumberOfSharesToBeExchangedUnderTheAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum number of shares to be exchanged under merger agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Funded commitments related to the investments in qualified affordable housing projects</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Funded Commitments Related To The Investments In Qualified Affordable Housing Projects</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Funded commitments related to the investments in qualified affordable housing projects.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfCaptiveClaimsListedTransactionLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of captive claims listed transaction loss ratio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfCaptiveClaimsListedTransactionLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Captive Claims Listed Transaction Loss Ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfCaptiveClaimsListedTransactionLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of captive claims listed transaction loss ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosureItemAmountsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis in acquired loans at acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodAtAcquisitionAtFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, at Acquisition, at Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Assets:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsFairValueDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets, Fair Value Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pro-forma operating revenue, net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition, Pro Forma Income (Loss) from Continuing Operations, Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Accounts Notes Loans And Financing Receivable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accounts, Notes, Loans and Financing Receivable [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesPeriodPastDueAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Asset, Aging</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesPeriodPastDueAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Aging [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities and Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressStateOrProvince_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, State or Province</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Derivative Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoansServicedForOthersUnpaidPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loans serviced for others unpaid principal amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoansServicedForOthersUnpaidPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Serviced For Others Unpaid Principal Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoansServicedForOthersUnpaidPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans serviced for others unpaid principal amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deferred Income Tax Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredIncomeTaxAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax impact portion of deferred tax asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalRealEstateLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agricultural Real Estate Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalRealEstateLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agricultural Real Estate Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalRealEstateLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agricultural real estate Loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionEquityInterestIssuedOrIssuablePerShareOfAcquiredEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued in exchange of each outstanding share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionEquityInterestIssuedOrIssuablePerShareOfAcquiredEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Equity Interest Issued Or Issuable Per Share Of Acquired Entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionEquityInterestIssuedOrIssuablePerShareOfAcquiredEntity_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisition, equity interest issued or issuable for per share of acquired entity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableNonaccrualOfBorrower_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable nonaccrual of borrower.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableNonaccrualOfBorrower_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Nonaccrual Of Borrower</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableNonaccrualOfBorrower_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing receivable nonaccrual of borrower</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Comprehensive Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ComprehensiveIncomeNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Comprehensive Income (Loss), Net of Tax, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_TradingSymbol_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Trading Symbol</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Available-for-sale Securities [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SatisfactoryMonitoredMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">4 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SatisfactoryMonitoredMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Satisfactory Monitored [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SatisfactoryMonitoredMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Satisfactory Monitored [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition, Pro Forma Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaEarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAndUnfundedCommitmentLiabilityNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance for credit losses and unfunded commitment liability net of tax.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAndUnfundedCommitmentLiabilityNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Credit Losses And Unfunded Commitment Liability Net Of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAndUnfundedCommitmentLiabilityNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for redit losses and unfunded commitment liability, net of tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsRecordedInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impaired loans classified as troubled debt restructured</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsRecordedInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Modified, Accumulated</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaIncomeTaxesExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaIncomeTaxesExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Income Taxes Expense Benefit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaIncomeTaxesExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisitions pro forma income taxes expense benefit.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromFederalHomeLoanBankBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from FHLB advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromFederalHomeLoanBankBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from FHLBank Borrowings, Financing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Long-Term Debt Instruments [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvertisingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Advertising</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvertisingExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advertising Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">AOCI Attributable to Parent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated Other Comprehensive (Loss) [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Combination and Asset Purchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other comprehensive income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableSignificantPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Purchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableSignificantPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Combined increase in nonaccrual loans due to two borrower relationships</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearingTimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest-bearing time deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearingTimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Interest Bearing Time Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearingTimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed interest bearing time deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressCityOrTown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, City or Town</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MaturityOver90DaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greater Than 90 Days [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MaturityOver90DaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maturity Greater than 90 Days [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">8 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loss [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loss.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDepositsInBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest-bearing time deposits</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfEarningsPerShareBasicByCommonClassTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Calculation of Basic Earnings Per Share</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsOfDividendsCommonStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Cash dividends paid on common stock</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subsequent Event</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Axis]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed deposits.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableWithFixedRatesOfInterest1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution of fixed rate loans by major loan category, Fixed Rate</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maturities, prepayments and calls</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Maturities, Prepayments and Calls of Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Total</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Twelve Months and Over</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLonger_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Stockholders' Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForProceedsFromLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Payments for (Proceeds from) Loans and Leases, Total</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateImmaterialEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, accounting standards update, immaterial effect [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleMeasurementInputExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unobservable Inputs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleMeasurementInputExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Measurement Input [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Quantitative Information about Unobservable Inputs Used in Recurring and Nonrecurring Level 3 Fair Value Measurements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAverageFixedInterestRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pay</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeContractTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Contract [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Property, Plant and Equipment, Net, Total</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Property, Plant and Equipment, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_EarningsPerShareTable_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Earnings per share.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_EarningsPerShareTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ProceedsToAcquireSalesOfOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Proceeds to acquire sales of other securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ProceedsToAcquireSalesOfOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds To Acquire Sales Of Other Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ProceedsToAcquireSalesOfOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialRealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialRealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CoreDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Core Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CoreDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Core Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost, One year or less</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedServiceRightAssetsFairMarketValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of the capitalized servicing rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedServiceRightAssetsFairMarketValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capitalized service right assets fair market value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedServiceRightAssetsFairMarketValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Service Right Assets Fair Market Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Nonaccrual.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonaccrual [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfIncomeAndComprehensiveIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Comprehensive Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestPayableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestPayableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Payable Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestPayableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest payable fair value disclosure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfFederalHomeLoanBankStock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from redemption of FHLB stock</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfArrangementAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collaborative Arrangement and Arrangement Other than Collaborative</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdamsCountyFinancialResourcesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adams County Financial Resources [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdamsCountyFinancialResourcesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adams County Financial Resources [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdamsCountyFinancialResourcesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Adams County Financial Resources.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Common, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCentralIndexKey_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Central Index Key</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CommercialAndIndustrialAndIndustrialDevelopmentBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial and Industrial [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CommercialAndIndustrialAndIndustrialDevelopmentBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial And Industrial And Industrial Development Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CommercialAndIndustrialAndIndustrialDevelopmentBondsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commercial And Industrial And Industrial Development Bonds [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorReceivedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of directors received shares</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorReceivedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of director received shares.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of restricted stock (Net of forfeitures)</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdopted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, accounting standards update, adopted [true false]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsThreeYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses Writeoffs Three Years Before Latest Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USTreasuryAndGovernmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">US Treasury &amp; Agency Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USTreasuryAndGovernmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US Treasury and Government [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansNotesTradeAndOtherReceivablesDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred, Equity Interests Issued and Issuable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noninterest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Noninterest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisitions pro forma noninterest expense.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan amortization period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentConvertibleRemainingDiscountAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Convertible, Remaining Discount Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total noninterest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityTaxIdentificationNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Tax Identification Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueAdjustmentOfDerivative_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value adjustment of derivative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueAdjustmentOfDerivative_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Adjustment Of Derivative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueAdjustmentOfDerivative_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value adjustment of derivative.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income Before Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">New Accounting Pronouncements or Change in Accounting Principle [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instruments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialInstrumentsTypesOfFinancialInstrumentsDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instruments [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableHeldForSaleNetNotPartOfDisposalGroup_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Held-for-Sale, Not Part of Disposal Group, after Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestIncomeOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestIncomeOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Other [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestIncomeOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest Income, Other.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Term of loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OneToFourFamilyRealEstateLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">1-4 Family Real Estate Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OneToFourFamilyRealEstateLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">One to Four Family Real Estate Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OneToFourFamilyRealEstateLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">One to four family real estate loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agricultural [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agricultural Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agricultural Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Reclassification adjustment for realized loss on sale of available-for-sale securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeasesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Leases [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesStateAndMunicipal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Municipalities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesStateAndMunicipal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Securities, State and Municipal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TDR impaired loans charged off amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesImpairedTroubledDebtRestructuringWriteDown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivables, Impaired, Troubled Debt Restructuring, Write-down</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentRiskAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instrument [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Assets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueForCertificateOfDepositAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value for certificate of deposit, amortization period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueForCertificateOfDepositAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value For Certificate Of Deposit Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueForCertificateOfDepositAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value for certificate of deposit amortization period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesGrossRealizedGainLossAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Gain (Loss) [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DelinquentPeriodForChargingDownOrAllocatedCommercialAndAgriculturalCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delinquent period for charging down/allocated commercial and agricultural credits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DelinquentPeriodForChargingDownOrAllocatedCommercialAndAgriculturalCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Delinquent Period For Charging Down Or Allocated Commercial And Agricultural Credits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DelinquentPeriodForChargingDownOrAllocatedCommercialAndAgriculturalCredits_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Delinquent period for charging down or allocated commercial and agricultural credits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityRegistrantName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Registrant Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToExtend_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Existence of Option to Extend [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Lease, Description [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Retained Earnings (Accumulated Deficit), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retained earnings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings (Accumulated Deficit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAvailableToBeAdvancedInConnectionWithImpairedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional funds available to be advanced in connection with impaired loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAvailableToBeAdvancedInConnectionWithImpairedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Funds Available To Be Advanced In Connection With Impaired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAvailableToBeAdvancedInConnectionWithImpairedLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Additional funds available to be advanced in connection with impaired loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gross Unrealized Losses, Less Than Twelve Months</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental Information</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueOfFederalHomeLoanBankAdvancesAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of Federal Home Loan Bank (FHLB) advances, amortization period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueOfFederalHomeLoanBankAdvancesAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Of Federal Home Loan Bank Advances Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueOfFederalHomeLoanBankAdvancesAmortizationPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value of Federal Home Loan Bank advances, amortization period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Allowance for Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at beginning of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at ending of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Current Expected Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current expected credit losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Retained Earnings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RetainedEarningsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Retained Earnings [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedGainLossOnInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Realized Gains and Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealizedGainLossOnInvestmentsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Realized Gain (Loss) on Investments [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OtherManagementMembersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other management Members.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OtherManagementMembersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Management Members [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OtherManagementMembersMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Members of Management</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CashCashEquivalentsAndFederalFundsSoldFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CashCashEquivalentsAndFederalFundsSoldFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Cash Equivalents And Federal Funds Sold Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CashCashEquivalentsAndFederalFundsSoldFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash cash equivalents and federal funds sold fair value disclosure.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ScheduleOfCumulativeBasisAdjustmentsForInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Cumulative Basis Adjustments for Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges [Table Text Block]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MinimumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Minimum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Accrued Expenses And Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed accrued expenses and other liabilities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnfundedLoanCommitmentAndLettersOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unfunded Loan Commitment &amp; Letters of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnfundedLoanCommitmentAndLettersOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unfunded Loan Commitment And Letters Of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnfundedLoanCommitmentAndLettersOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unfunded Loan Commitment And Letters Of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost and Fair Value of Securities with Gross Unrealized Gains and Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAvailableForSaleSecuritiesReconciliationTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost and Fair Value of Debt Securities, by Contractual Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsClassifiedByContractualMaturityDateTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments Classified by Contractual Maturity Date [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Fair Value, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative, Fair Value, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ReEvaluationPeriodForRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Re-evaluation period for real estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ReEvaluationPeriodForRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Re Evaluation Period For Real Estate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ReEvaluationPeriodForRealEstate_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Re evaluation period for real estate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaximumNumberOfSharesExchangedInMergerAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum number of shares exchanged in merger agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaximumNumberOfSharesExchangedInMergerAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum Number Of Shares Exchanged In Merger Agreement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaximumNumberOfSharesExchangedInMergerAgreement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum number of shares exchanged in merger agreement.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisValuationTechniquesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement Inputs and Valuation Techniques [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilityNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability Derivatives, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeLiabilityNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USGovernmentAgenciesDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Government Agencies [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USGovernmentAgenciesDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US Government Agencies Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Component</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquityComponentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Component [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net unrealized gain (loss) on available-for-sale securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, before Tax, Portion Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchasedAndSecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchasedAndSecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Federal funds purchased and securities sold under agreement to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchasedAndSecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Funds Purchased and Securities Loaned or Sold under Agreements to Repurchase, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueForCertificateOfDepositValuationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value for certificate of deposit, valuation amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueForCertificateOfDepositValuationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value For Certificate Of Deposit Valuation Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueForCertificateOfDepositValuationAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value for certificate of deposit valuation amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Change in Accounting Principle, Accounting Standards Update, Adoption Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ChangeInAccountingPrincipleAccountingStandardsUpdateAdoptionDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in accounting principle, accounting standards update, adoption date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleSecuritiesGrossRealizedGainLossTaxExpensesBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available For Sale Securities Gross Realized Gain Loss Tax Expenses (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleSecuritiesGrossRealizedGainLossTaxExpensesBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Gross Realized Gain Loss Tax Expenses (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleSecuritiesGrossRealizedGainLossTaxExpensesBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax benefit related to net realized losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentPerformanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment performance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentPerformanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment Performance [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ReceivablesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Receivables [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndDueFromBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Cash and Due from Banks, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndDueFromBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and due from banks</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashAndDueFromBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash and Due from Banks</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DistributionOfFixedRateLoansAndVariableRateLoansByMajorLoanCategoryTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution of Fixed Rate Loans and Variable Rate Loans by Major Loan Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DistributionOfFixedRateLoansAndVariableRateLoansByMajorLoanCategoryTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Distribution Of Fixed Rate Loans And Variable Rate Loans By Major Loan Category Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DistributionOfFixedRateLoansAndVariableRateLoansByMajorLoanCategoryTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tabular disclosure of fixed rate loans and variable rate loans by major loan category.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Adjustments to reconcile net income to net cash from operating activities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Frequency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementFrequencyAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossesRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for Loan Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossesRollForward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Loan and Lease Losses [Roll Forward]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument basis points</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentBasisSpreadOnVariableRate1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Basis Spread on Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCurrentReportingStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Current Reporting Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesAuthorized_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares Authorized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Securities for which Entity has Right to Sell or Repledge [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnfundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unfunded commitments related to the investments in qualified affordable housing projects</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnfundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unfunded Commitments Related To The Investments In Qualified Affordable Housing Projects</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnfundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unfunded commitments related to the investments in qualified affordable housing projects.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfServicingAssetsAtAmortizedValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Mortgage Servicing Rights Capitalized and Amortized</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfServicingAssetsAtAmortizedValueTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Amortized Cost [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accretable yield related to acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYield_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TroubledDebtRestructuringsOnFinancingReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impaired Loans Classified as Troubled Debt Restructured</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ContributionProvidedByBothRecoveriesAndProvisionAlongWithReductionOfAllowanceCausedByChargeOffsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Activities in Allowance for Credit Losses</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfIntangibleAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerListsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Lists [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerListsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Lists [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SummaryOfInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesOfFixedRateReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SummaryOfInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesOfFixedRateReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SummaryOfInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesOfFixedRateReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Summary of Interest Rate Swap Derivatives Designated as Fair Value Accounting Hedges of Fixed-rate Receivables.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets Measured at Fair Value on Nonrecurring Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnNonrecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements, Nonrecurring [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock - No par value 20,000,000 shares authorized; issued and outstanding 14,564,425 shares 3/31/24 and 12/31/23</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Value, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAdvanced_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional funds advanced</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAdvanced_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Funds Advanced</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAdvanced_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Additional funds advanced.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal funds purchased and securities sold under agreements to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Funds Purchased and Securities Sold under Agreements to Repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianStateBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ossian State Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianStateBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ossian State Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianStateBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ossian state bank.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedAdditionsToServicingRights_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capitalized additions to servicing rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedAdditionsToServicingRights_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Additions to Servicing Rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedAdditionsToServicingRights_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Capitalized additions to servicing rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash and cash equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CurrentFiscalYearEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Current Fiscal Year End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairedFinancingReceivableRecordedInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral dependent loans categorized as Level 3</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairedFinancingReceivableRecordedInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Recorded Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairedFinancingReceivableRecordedInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total impaired loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairedFinancingReceivableRecordedInvestment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impaired Financing Receivable, Recorded Investment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Share-Based Payment Arrangement, Noncash Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Share-Based Payment Arrangement, Noncash Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock issued in exchange of each outstanding share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition, Equity Interest Issued or Issuable, Number of Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AccountingStandardsUpdate202302Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASU 2023-02 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AccountingStandardsUpdate202302Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update 2023-02 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AccountingStandardsUpdate202302Member_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Accounting Standards Update 2023-02 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesBySecurityTypeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt securities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesBySecurityTypeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Dividend Income, Securities, by Security Type [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Gain (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net realized losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net loss on sale of available-for-sale securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on sales of securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SatisfactoryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SatisfactoryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Satisfactory [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SatisfactoryMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Satisfactory [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total consideration for acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Transaction value for common stock and cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationConsiderationTransferred1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Consideration Transferred</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestBearingTimeDepositsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest-bearing time deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestBearingTimeDepositsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Bearing Time Deposits Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestBearingTimeDepositsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest bearing time deposits fair value disclosure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income Tax Expense (Benefit), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxExpenseBenefit_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Tax Expense (Benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Unamortized Note Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DeferredFinanceCostsGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Issuance Costs, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationTechnologyAndDataProcessing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Data processing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InformationTechnologyAndDataProcessing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Information Technology and Data Processing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesBorrowedFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesBorrowedFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Borrowed, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentsToAcquireSalesOfOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentsToAcquireSalesOfOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Sales Of Other Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentsToAcquireSalesOfOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments to acquire sales of other securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases, (Sales), Issuances, (Settlements)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchasesSalesIssuancesSettlements_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payments, Maturities &amp; Calls</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_GenevaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geneva [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_GenevaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Geneva [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_GenevaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Geneva.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest and Fee Income, Loans and Leases, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans, including fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndFeeIncomeLoansAndLeases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Fee Income, Loans and Leases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoanRestructuringModificationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan Restructuring Modification</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoanRestructuringModificationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Restructuring Modification [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Valuation Technique</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetValuationTechniqueExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset, Valuation Technique [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_IncreaseInCashSurrenderValueOfBankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Increase in cash surrender value of bank owned life insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_IncreaseInCashSurrenderValueOfBankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase In Cash Surrender Value Of Bank Owned Life Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_IncreaseInCashSurrenderValueOfBankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase in cash surrender value of bank owned life insurance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Finite-Lived Intangible Assets, Net, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Finite-Lived Intangible Assets, Net, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AffordableHousingProjectInvestmentNatureOfWriteDown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment losses related to investments in qualified affordable housing projects</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AffordableHousingProjectInvestmentNatureOfWriteDown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Affordable Housing Project Investment, Nature of Write-down</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CaptivesProvisionExistencePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Captives provision existence period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CaptivesProvisionExistencePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Captives Provision Existence Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CaptivesProvisionExistencePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Captives provision existence period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Income taxes paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeTaxesPaid_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Taxes Paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Change in interest-bearing time deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromPaymentsForInInterestBearingDepositsInBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from (Payments for) in Interest-Bearing Deposits in Banks</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares of restricted stock, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Restricted Stock Award, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAdvancedWithImapiredLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additional funds advanced with imapired loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAdvancedWithImapiredLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Funds Advanced with Imapired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AdditionalFundsAdvancedWithImapiredLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Additional funds advanced with imapired loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentsToAcquireAvailableForSaleSecuritiesDebtIncludingAdjustmentForSecuritiesAcquiredInAcquisition_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentsToAcquireAvailableForSaleSecuritiesDebtIncludingAdjustmentForSecuritiesAcquiredInAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments To Acquire Available For Sale Securities Debt Including Adjustment For Securities Acquired In Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentsToAcquireAvailableForSaleSecuritiesDebtIncludingAdjustmentForSecuritiesAcquiredInAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payments to acquire available for sale securities debt including adjustment for securities acquired in acquisition.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect, Period of Adoption, Adjustment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative Effect Period of Adoption Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByMeasurementBasisAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Basis [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Allowance For Credit Losses [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableAllowanceForCreditLossesLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFourOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for credit losses writeoffs four or more years before latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFourOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses Writeoffs Four Or More Years Before Latest Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFourOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge-offs - Prior</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MaturityOvernightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Overnight &amp; Continuous [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MaturityOvernightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maturity Overnight [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalariesAndWages_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Salaries and wages</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SalariesAndWages_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Salary and Wage, NonOfficer, Excluding Cost of Good and Service Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleDebtSecuritiesAmortizedCostBasisExcludingMortgageBackedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Amortized Cost, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleDebtSecuritiesAmortizedCostBasisExcludingMortgageBackedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Debt Securities Amortized Cost Basis Excluding Mortgage Backed Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleDebtSecuritiesAmortizedCostBasisExcludingMortgageBackedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available for sale debt securities amortized cost basis excluding mortgage backed securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Term Debt, Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repurchase Agreements and Similar Transactions, Maturity Periods</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repurchase Agreements and Similar Transactions, Maturity Periods [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Events [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Comprehensive Income (Loss) (Net of Tax):</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other Comprehensive Income (Net of Tax):</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosures [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Accretion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAccretion_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Accretion</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableOriginatedFourOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Originated Four or More Years Before Latest Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableOriginatedFourOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prior</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableOriginatedFourOrMoreYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable originated four or more years before latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ScheduleOfLoansIndividuallyEvaluatedForImpairmentByPortfolioSegmentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Individually Evaluated for Impairment by Portfolio Class of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ScheduleOfLoansIndividuallyEvaluatedForImpairmentByPortfolioSegmentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule Of Loans Individually Evaluated For Impairment By Portfolio Segment Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ScheduleOfLoansIndividuallyEvaluatedForImpairmentByPortfolioSegmentTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Schedule of loans individually evaluated for impairment by portfolio segment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DoubtfulMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Doubtful [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DoubtfulMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">7 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DoubtfulMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Doubtful [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestPaidNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Paid, Excluding Capitalized Interest, Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MaturityUpTo30DaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Up to 30 Days [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MaturityUpTo30DaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maturity Less than 30 Days [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2028</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Income, Securities, US Treasury and Other US Government, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Treasury and government agencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeSecuritiesUSTreasuryAndOtherUSGovernment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Securities, US Treasury and Other US Government</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2025</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetNotPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Current [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialAssetNotPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Not Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentOfCapitalCallsToLowIncomeHousingInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Payment of capital calls to low income housing investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentOfCapitalCallsToLowIncomeHousingInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment Of Capital Calls To Low Income Housing Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaymentOfCapitalCallsToLowIncomeHousingInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Payment of capital calls to low income housing investments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetMeasurementInputExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unobservable Inputs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetMeasurementInputExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset, Measurement Input [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Unrealized Gains</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedGainBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest bearing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Interest Bearing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed interest bearing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalCashFlowElementsInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Activity in available-for-sale securities:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdditionalCashFlowElementsInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Additional Cash Flow Elements, Investing Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_BrokersAndDealersAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Broker-Dealer [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables60To89DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">60 to 89 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables60To89DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, 60 to 89 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating Lease Costs and Cash Flows</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeaseCostTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lease, Cost [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FederalHomeLoanBankOfCincinnatiAndIndianapolisStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank of Cincinnati and Indianapolis Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FederalHomeLoanBankOfCincinnatiAndIndianapolisStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank Of Cincinnati And Indianapolis Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FederalHomeLoanBankOfCincinnatiAndIndianapolisStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal Home Loan Bank of Cincinnati and Indianapolis stock.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, After five years through ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeDisclosureAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee Disclosure [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Affordable housing tax credits from other tax benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AffordableHousingTaxCreditsAndOtherTaxBenefitsAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Affordable Housing Tax Credits and Other Tax Benefits, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeLeaseDescriptionTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Lease, Description [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByLiabilityClassAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liability Class [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaturedSecurityProceedsNotReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Matured security proceeds not received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaturedSecurityProceedsNotReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Matured Security Proceeds Not Received</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaturedSecurityProceedsNotReceived_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Matured security proceeds not received.</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fixed-to-floating interest rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentInterestRateEffectivePercentage_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Interest Rate, Effective Percentage</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repurchase Agreements and Similar Transactions, Maturity Periods</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsSoldUnderAgreementsToRepurchaseMaturityPeriodsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repurchase Agreements and Similar Transactions, Maturity Periods [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividend payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsPayableCurrentAndNoncurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Operating lease, Remaining lease team</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseRemainingLeaseTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Remaining Lease Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Basic earnings per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basic Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValueAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized Additions</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commitments and Contingencies</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommitmentsAndContingencies_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commitments and Contingencies</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combinations [Abstract]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net gain on sale of loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSalesOfLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sales of Loans, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquisitionRelatedCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, acquisition related costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationAcquisitionRelatedCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Acquisition Related Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CompensationAnnualBasisCommitteeAward_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Compensation annual basis committee award</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CompensationAnnualBasisCommitteeAward_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Compensation Annual Basis Committee Award</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CompensationAnnualBasisCommitteeAward_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Compensation annual basis committee award.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount yield</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Discount Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationAverageRemainingUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, average remaining life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationAverageRemainingUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Average Remaining Useful Life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationAverageRemainingUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination average remaining useful life.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update and Change in Accounting Principle [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfNewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Impact of Adopting ASU</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateOwnedMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherRealEstateOwnedMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Real Estate Owned, Measurement Input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for Credit Losses and Unfunded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Provision For Loan Losses And Unfunded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisitions pro forma provision for loan losses and unfunded.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating lease cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeaseCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Operating Lease, Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash (provided by) used by operating activities</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinitelivedIntangibleAssetsAcquired1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recognition of core deposit intangible asset with acquired purchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinitelivedIntangibleAssetsAcquired1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenUpValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination identifiable assets in premises and equipment written up value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenUpValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Identifiable Assets in Premises and Equipment Written Up Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenUpValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, premises and equipment written up value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_TwoOneToFourFamilyRealEstateStrataMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Two 1-4 Family Real Estate Strata [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_TwoOneToFourFamilyRealEstateStrataMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Two One to Four Family Real Estate Strata [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_TwoOneToFourFamilyRealEstateStrataMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Two 1-4 family real estate strata.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDividendIncomeOperatingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDividendIncomeOperatingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Dividend Income, Operating [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestIncomeExpenseFederalFundsSoldAndPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal funds sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestIncomeExpenseFederalFundsSoldAndPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income Expense Federal Funds Sold And Purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestIncomeExpenseFederalFundsSoldAndPurchased_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest income expense federal funds sold and purchased.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost, After five years through ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 5 Through 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentPeriodEndDate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Period End Date</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statistical Measurement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_RangeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statistical Measurement [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualNumberOfBorrower_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Nonaccrual number of borrower.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualNumberOfBorrower_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonaccrual Number Of Borrower</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualNumberOfBorrower_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nonaccrual number of borrower</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesAndLoansReceivableLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts, Notes, Loans and Financing Receivable [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodContractuallyRequiredPaymentsReceivableAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total required payments receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodContractuallyRequiredPaymentsReceivableAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Contractually Required Payments Receivable at Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OperatingLeasePayments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Operating cash flows</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Earnings Per Share, Diluted, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Diluted earnings per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Diluted Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareDiluted_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share, Diluted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductsAndServicesDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product and Service [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsNegotiableOrderOfWithdrawalNOW_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">NOW accounts</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FederalReservesBankTermFundingProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Federal reserve's bank term funding program.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FederalReservesBankTermFundingProgramMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Reserve's Bank Term Funding Program [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsFairValueHierarchyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetReclassificationAndAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Reclassification And Adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetReclassificationAndAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Fair value measurement with unobservable inputs reconciliation recurring basis asset reclassification and adjustments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SpecificAllocationOnPrincipalBalanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Specific allocation on principal balance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SpecificAllocationOnPrincipalBalanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Specific Allocation On Principal Balance [Member]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SpecialMentionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Special Mention [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SpecialMentionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">5 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SpecialMentionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Special Mention [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MergerAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Merger Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MergerAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Merger Agreement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MergerAgreementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Merger agreement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalFundsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal funds sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalFundsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Federal Funds Sold</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalFundsSold_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed federal funds sold.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MortgageServicingRightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage Servicing Rights [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MortgageServicingRightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Servicing Rights [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MortgageServicingRightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage Servicing Rights [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value on a Recurring Basis [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsRecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recoveries</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossRecoveryOfBadDebts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Loan and Lease Loss, Recovery of Bad Debts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DelinquentPeriodForChargingDownConsumerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Delinquent period for charging down consumer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DelinquentPeriodForChargingDownConsumerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Delinquent Period For Charging Down Consumer Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_DelinquentPeriodForChargingDownConsumerLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Delinquent period for charging down consumer loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeCollateralRightToReclaimCash_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash collateral pledged to counterparties as security for its obligations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeCollateralRightToReclaimCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialServiceOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Service Charges and Fees [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialServiceOtherMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Service, Other [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total noninterest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialAssetsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Servicing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingOfFinancialAssetsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transfers and Servicing of Financial Assets [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income (Expense), after Provision for Loan Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Interest Income After Provision for Credit Losses*</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USTreasurySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">U.S. Treasury [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USTreasurySecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US Treasury Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchase of treasury stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForRepurchaseOfCommonStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments for Repurchase of Common Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect, Period of Adoption, Adjusted Balance [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAdjustedBalanceMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative Effect Period of Adoption Adjusted Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditCardReceivablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consumer - Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CreditCardReceivablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Credit Card Receivable [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Finite-Lived Intangible Assets, Major Class Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsMajorClassNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Major Class Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsSavingsDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Savings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepositsSavingsDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits, Savings Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansHeldForSaleFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansHeldForSaleFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan, Held-for-Sale, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, One year or less</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SeniorManagementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Senior management.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SeniorManagementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Senior Management [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_SeniorManagementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Senior Management</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities and Stockholders' Equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LiabilitiesAndStockholdersEquityAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities and Equity [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reclassification from nonaccretable difference</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldReclassificationsFromNonaccretableDifference_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Reclassifications from Nonaccretable Difference</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfStrataWhichIncludedLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of strata which included loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfStrataWhichIncludedLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Strata which Included Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfStrataWhichIncludedLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of strata which included loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolving_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Revolving</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolving_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Loans Amortized Cost Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressPostalZipCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Postal Zip Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityInteractiveDataCurrent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Interactive Data Current</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrivatePlacementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Private Placement</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrivatePlacementMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Private Placement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MortgageBackedSecuritiesAvailableForSaleAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost, Mortgage-backed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MortgageBackedSecuritiesAvailableForSaleAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Backed Securities Available For Sale Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MortgageBackedSecuritiesAvailableForSaleAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Mortgage backed securities available for sale amortized cost.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Subordinated Debt, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Subordinated Debt, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Subordinated Debt, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated notes, net of unamortized issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Debt</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LitigationAndAnyDeficiencyChargedOffPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Litigation and any deficiency charged off period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LitigationAndAnyDeficiencyChargedOffPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Litigation And Any Deficiency Charged Off Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LitigationAndAnyDeficiencyChargedOffPeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Litigation and any deficiency charged off period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSecuritiesFinancingTransactionsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Remaining Contractual Maturity in Repurchase Agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSecuritiesFinancingTransactionsTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Securities Financing Transactions [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residential Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialMortgageMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residential Mortgage [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2027</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Asset, Expected Amortization, Year Three</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USStatesAndPoliticalSubdivisionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State and Local Governments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_USStatesAndPoliticalSubdivisionsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">US States and Political Subdivisions Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDepositLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest-bearing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestBearingDepositLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest-Bearing Deposit Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross Unrealized Losses, Aggregated by Investment Category and Length of Time</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionFairValueTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianFinancialServiceIncorporatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Ossian [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianFinancialServiceIncorporatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ossian Financial Services, Inc. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianFinancialServiceIncorporatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ossian Financial Service Incorporated [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianFinancialServiceIncorporatedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ossian financial services incorporated.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionsProFormaNetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition, Pro Forma Net Income (Loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PassMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pass [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PassMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pass [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsumerPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consumer [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ConsumerPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consumer Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Interest Expense, Deposits, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityIncorporationStateCountryCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Incorporation, State or Country Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ContractualAgingOfRecordedInvestmentInPastDueLoansByClassOrLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Contractual Aging of Recorded Investment in Past Due Loans by Portfolio Classification of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ContractualAgingOfRecordedInvestmentInPastDueLoansByClassOrLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Contractual Aging Of Recorded Investment In Past Due Loans By Class Or Loans Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ContractualAgingOfRecordedInvestmentInPastDueLoansByClassOrLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tabular disclosure of contractual aging of the recorded investment in past due loans by class or loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnsecuredConsumerLoansCreditCardCreditsAndOverdraft_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unsecured consumer loans, credit card credits and overdraft lines of credit reach</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnsecuredConsumerLoansCreditCardCreditsAndOverdraft_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unsecured Consumer Loans Credit Card Credits And Overdraft</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_UnsecuredConsumerLoansCreditCardCreditsAndOverdraft_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Unsecured consumer loans credit card credits and overdraft.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, After ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Equity Components</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementEquityComponentsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity Components [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsDebtAndEquitySecuritiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments, Debt and Equity Securities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Cash paid for the capital stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquireBusinessesGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments to Acquire Businesses, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noninterest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestIncomeAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Income [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestBearingDepositsLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest Bearing Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestBearingDepositsLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Bearing Deposits Liability [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestBearingDepositsLiabilityMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest bearing deposits liability.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorsReceivedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of directors received shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorsReceivedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Directors Received Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorsReceivedShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of directors received shares.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recent Accounting Pronouncements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsAndChangesInAccountingPrinciplesTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update and Change in Accounting Principle [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Portfolio Segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Portfolio Segment [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Local Phone Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_LocalPhoneNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Local Phone Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsidiarySaleOfStockAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfClientsAssetsUnderManagement_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of clients assets under management</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfClientsAssetsUnderManagement_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Clients Assets Under Management</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfClientsAssetsUnderManagement_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of clients assets under management.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DesignatedAsHedgingInstrumentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Designated as Hedging Instrument [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of restricted stock (Net of forfeitures), Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Restricted stock awards, Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Goodwill, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Goodwill, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Goodwill, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Goodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Financing Receivable Allowance For Credit Losses [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivableAllowanceForCreditLossesTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Allowance for Credit Loss [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ElevenAgriculturalRealEstateStrataMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Eleven Agricultural Real Estate Strata [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ElevenAgriculturalRealEstateStrataMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Eleven Agricultural Real Estate Strata [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ElevenAgriculturalRealEstateStrataMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Eleven agricultural real estate strata.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfCashFlowsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Cash Flows [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorsReceivedProratedDollarValueOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of directors received prorated dollar value of shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorsReceivedProratedDollarValueOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Directors Received Prorated Dollar Value Of Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfDirectorsReceivedProratedDollarValueOfShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of directors received prorated dollar value of shares.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BankOfGenevaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bank of Geneva [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BankOfGenevaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bank Of Geneva [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BankOfGenevaMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bank of Geneva.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalForgivenessMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal Forgiveness [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PrincipalForgivenessMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Principal Forgiveness [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning of Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValue_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">End of Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan servicing rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsUnderManagementCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets under management amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsUnderManagementCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets under Management, Carrying Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepositsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepositsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Deposits [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepositsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Accumulated Other Comprehensive Income (Loss), Net of Tax, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accumulated other comprehensive loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accumulated Other Comprehensive Income (Loss), Net of Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivablesNonAccrualStatusTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Nonaccrual [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfFinancingReceivablesNonAccrualStatusTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost of Nonaccrual Loans by Portfolio Class of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringChargedOff_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TDR impaired loans charged off</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringChargedOff_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivables Impaired Number Of Troubled Debt Restructuring Charged Off</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringChargedOff_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivables impaired number of troubled debt restructuring charged off.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RecordedInvestmentInThoseClassesBasedOnPaymentActivityAndAssignedGradingTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recorded Investment for Consumer Loans, Credit Quality based on Status of Loan and Payment Activity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RecordedInvestmentInThoseClassesBasedOnPaymentActivityAndAssignedGradingTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Recorded Investment In Those Classes Based On Payment Activity And Assigned Grading Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RecordedInvestmentInThoseClassesBasedOnPaymentActivityAndAssignedGradingTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tabular disclosure of impaired loans classified as troubled debt restructure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect, Period of Adoption [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentByTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Tangible Asset [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoninterestBearing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noninterest bearing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoninterestBearing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Noninterest Bearing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoninterestBearing_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed non interest bearing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_MaximumMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Maximum</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Loans Acquired and Contractually Required Payments Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired In Transfer Accounted For As Debt Securities Acquired During Period Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Certain loans acquired in transfer accounted for as debt securities acquired during period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost, After ten years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year 10</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LimberlostBancsharesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Limberlost Bancshares, Inc. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LimberlostBancsharesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Limberlost Bancshares Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LimberlostBancsharesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Limberlost Bancshares, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RiskCategoryOfLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk Category of Loans by Portfolio Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RiskCategoryOfLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Risk Category Of Loans Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RiskCategoryOfLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Tabular disclosure of risk category of loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Dividends, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash dividends declared not paid</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Dividends_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingMortgageBackedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Fair Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingMortgageBackedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available For Sale Securities Debt Maturities Fair Value Excluding Mortgage Backed Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingMortgageBackedSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Available for sale securities debt maturities fair value excluding mortgage backed securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueRecurringBasisUnobservableInputReconciliationAssetGainLossStatementOfIncomeExtensibleList_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Federal Home Loan Bank advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalHomeLoanBankBorrowingsFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Home Loan Bank Borrowings, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Basis of Presentation and Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Maturity30To90DaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">30-90 Days [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Maturity30To90DaysMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maturity 30 to 90 Days [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel3Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 3 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquipmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Furniture and equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EquipmentExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equipment Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Recurring and Nonrecurring [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Dependent Impaired Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impaired Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ImpairedLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Impaired Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Increase (Decrease) in Cash and Cash Equivalents</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Loans Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed loans net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PerpetualFederalSavingBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Perpetual Federal Savings Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PerpetualFederalSavingBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Perpetual Federal Saving Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PerpetualFederalSavingBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Perpetual federal savings bank.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Internal Credit Assessment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Internal Credit Assessment [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_USStatesAndPoliticalSubdivisionsTaxExemptDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State and Local Governments Tax-Exempt [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_USStatesAndPoliticalSubdivisionsTaxExemptDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">U S States And Political Subdivisions Tax Exempt Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_USStatesAndPoliticalSubdivisionsTaxExemptDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">US states and political subdivisions tax-exempt debt securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfFullServiceOffices_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of full-service offices</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfFullServiceOffices_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Full Service Offices</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfFullServiceOffices_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of full service offices.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Issuance of shares of restricted stock, forfeitures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodSharesRestrictedStockAwardForfeited_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period, Shares, Restricted Stock Award, Forfeited</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash flows expected to be collected at acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodCashFlowsExpectedToBeCollectedAtAcquisition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Acquired During Period, Cash Flows Expected to be Collected at Acquisition</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFiscalYearBeforeCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge-offs - fiscal year 2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFiscalYearBeforeCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for credit losses writeoffs fiscal year before current fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFiscalYearBeforeCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses Writeoffs Fiscal Year Before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaycheckProtectionProgramLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PPP Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaycheckProtectionProgramLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Paycheck Protection Program Loans [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PaycheckProtectionProgramLoansMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Paycheck protection program loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noninterest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestExpenseAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest Expense [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CityAreaCode_lbl" xlink:role="http://www.xbrl.org/2003/role/label">City Area Code</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flows from Operating Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Operating Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInDebtAndMarketableEquitySecuritiesAndCertainTradingAssetsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentPerformanceStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instrument Performance Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentPerformanceStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument Performance Status [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOther_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestIncomeOther_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Income, Other</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PeoplesSidneyFinancialCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">PPSF [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PeoplesSidneyFinancialCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Peoples Sidney Financial Corporation [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PeoplesSidneyFinancialCorporationMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Peoples-Sidney Financial Corporation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Letter of Credit [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LetterOfCreditMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Letter of credit</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OhioEquityFundForHousingLimitedPartnershipMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ohio Equity Fund for Housing Limited Partnership [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OhioEquityFundForHousingLimitedPartnershipMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ohio Equity Fund For Housing Limited Partnership [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OhioEquityFundForHousingLimitedPartnershipMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ohio Equity Fund for Housing Limited Partnership.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year One, Originated, Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfSecurityTransfer_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Security transfer from Level 3 to Level 2</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfSecurityTransfer_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number Of Security Transfer</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfSecurityTransfer_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of security transfer.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgingPurposeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pledging Purpose [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank (FHLB) advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Federal Home Loan Bank Advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed federal home loan bank advances.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans, net of allowance for credit losses of $24,680 and $25,024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans - Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetReportedAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans and Leases Receivable, Net Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Weighted average common shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares Outstanding, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_GoodwillDeductibleForTaxPurposePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Goodwill deductible for tax purpose, period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_GoodwillDeductibleForTaxPurposePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Goodwill Deductible For Tax Purpose Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_GoodwillDeductibleForTaxPurposePeriod_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Goodwill deductible for tax purpose, period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ProvisionForCreditLossesoffBalanceSheetCreditExposures_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Provision for credit losses - off balance sheet credit exposures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ProvisionForCreditLossesoffBalanceSheetCreditExposures_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Provision for Credit Losses-Off Balance Sheet Credit Exposures*</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ProvisionForCreditLossesoffBalanceSheetCreditExposures_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Provision for credit losses-off balance sheet credit exposures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ProvisionForCreditLossesoffBalanceSheetCreditExposures_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Provision for credit losses-off balance sheet credit exposures</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flows from Financing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Financing Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Redemption price of principal amount of notes redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentRedemptionPricePercentageOfPrincipalAmountRedeemed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionShareOwnedSubjectToAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business acquisition share owned subject to adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionShareOwnedSubjectToAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition Share Owned Subject To Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionShareOwnedSubjectToAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisition share owned subject to adjustment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsGrandNet_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for credit losses writeoffs grand net.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsGrandNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses Writeoffs Grand Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsGrandNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge-offs - Grand Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsGrandNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross charge-offs - Grand Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental noncash disclosures:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherNoncashInvestingAndFinancingItemsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Noncash Investing and Financing Items [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonperformingFinancingReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nonperforming [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NonperformingFinancingReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonperforming Financial Instruments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalPeriodFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Period Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Number of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NumberOfLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Number of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Held</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Held [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Thereafter</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Intangible Assets Amortization Expense After Year Four</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite lived intangible assets amortization expense after year four.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringWriteDown_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">TDR impaired loans paid off</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringWriteDown_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivables Impaired Number Of Troubled Debt Restructuring Write Down</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringWriteDown_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivables impaired number of troubled debt restructuring write down.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedServiceRightAssetsIncludedInOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Capitalized service right assets included in other assets.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedServiceRightAssetsIncludedInOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Capitalized Service Right Assets Included In Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CapitalizedServiceRightAssetsIncludedInOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Capitalized service right assets included in other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationNonproduction_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Depreciation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DepreciationNonproduction_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Depreciation, Nonproduction</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Assets Sold under Agreements to Repurchase [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetsSoldUnderAgreementsToRepurchaseLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Assets Sold under Agreements to Repurchase [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Deposits, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfCaptiveClaimsTransactionOfInterestLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of captive claims transaction of interest loss ratio.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfCaptiveClaimsTransactionOfInterestLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage of Captive Claims Transaction of Interest Loss Ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfCaptiveClaimsTransactionOfInterestLossRatio_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of captive claims transaction of interest loss ratio</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValueValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Valuation Allowance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValueValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValueValuationAllowance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Amortized Cost, Increase (Decrease) for Valuation Allowance Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Internal Credit Assessment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InternalCreditAssessmentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Internal Credit Assessment [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Noncash or Part Noncash Acquisition, Value of Liabilities Assumed, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liabilities assumed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionValueOfLiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash or Part Noncash Acquisition, Value of Liabilities Assumed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetsAtAmortizedValueTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Amortized Cost [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_CumulativeEffectPeriodOfAdoptionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cumulative Effect, Period of Adoption [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestmentsAndSecuritiesAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestmentsAndSecuritiesAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other securities, at cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestmentsAndSecuritiesAtCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Investments and Securities, at Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanServicingRightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan Servicing Rights [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanServicingRightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Servicing Rights [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanServicingRightsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan Servicing Rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ConsumerOtherFinancingReceivablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consumer - Other [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ConsumerOtherFinancingReceivablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Consumer Other Financing Receivables [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ConsumerOtherFinancingReceivablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Consumer Other Financing Receivables [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfLoansHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Proceeds from Sale of Loans Held-for-sale, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfLoansHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Proceeds from sale of loans held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfLoansHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale, Loan, Held-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OfficeConstructionInProgress_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Office construction in-progress.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OfficeConstructionInProgress_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Office Construction In-Progress</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OfficeConstructionInProgress_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Construction in progress</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParticipatingMortgageLoanNameDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participating Mortgage Loan, Name [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalRealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Agricultural Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalRealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agricultural Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgriculturalRealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agricultural real estate.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Repurchased During Period, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockRepurchasedDuringPeriodValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Treasury stock repurchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Amortization of premiums on available-for-sale securities, net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accretion (Amortization) of Discounts and Premiums, Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Time Deposits, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Time</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TimeDeposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Building [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BuildingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Building [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityCommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Common Stock, Shares Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sales</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProceedsFromSaleOfAvailableForSaleSecuritiesDebt_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Proceeds from Sale of Debt Securities, Available-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Premises and equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestBearingDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Noninterest-Bearing Deposit Liabilities, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestBearingDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noninterest-bearing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoninterestBearingDepositLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noninterest-Bearing Deposit Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdate201613Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update 2016-13 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingStandardsUpdate201613Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ASU 2016-13 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: distributed earnings allocated to participating securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participating Securities, Distributed and Undistributed Earnings (Loss), Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consulting fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfessionalFees_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Professional Fees</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Treasury stock - 881,155 shares 3/31/24, 899,784 shares 12/31/23</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Treasury Stock, Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_CoverAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cover [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Selling, General and Administrative Expense, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other general and administrative</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SellingGeneralAndAdministrativeExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Selling, General and Administrative Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_IncreaseDecreaseInFinancingReceivableModifications_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Increase in loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_IncreaseDecreaseInFinancingReceivableModifications_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) In Financing Receivable Modifications</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_IncreaseDecreaseInFinancingReceivableModifications_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Increase (decrease) in financing receivable modifications.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssetStatementOfFinancialPositionExtensibleEnumeration_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset, Statement of Financial Position [Extensible Enumeration]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationAccretionOfMortgageServicingRightsMSRs_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amortization (accretion) of mortgage servicing rights MSRs.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationAccretionOfMortgageServicingRightsMSRs_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization (Accretion) of Mortgage Servicing Rights M S Rs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationAccretionOfMortgageServicingRightsMSRs_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Servicing rights amortization - net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationAccretionOfMortgageServicingRightsMSRs_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Servicing rights amortization and impairment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentFiscalYearFocus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Fiscal Year Focus</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForExpectedCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for expected credit losses.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForExpectedCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Expected Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForExpectedCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Current Expected Credit Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForExpectedCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Balance at beginning of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForExpectedCreditLosses_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Balance at ending of year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PerformingFinancingReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PerformingFinancingReceivableMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Performing Financial Instruments [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAssetsSoldUnderAgreementsToRepurchaseTable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule Of Assets Sold Under Agreements To Repurchase [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAssetsSoldUnderAgreementsToRepurchaseTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Assets Sold under Agreements to Repurchase [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestReceivableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestReceivableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Receivable Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestReceivableFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest receivable fair value disclosure.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaximumTimeForReevaluation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Maximum time for re-evaluation (in months)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaximumTimeForReevaluation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Maximum Time For Reevaluation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_MaximumTimeForReevaluation_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Maximum time for reevaluation.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Sale of Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SaleOfStockNameOfTransactionDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Sale of Stock [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Operations</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionProFormaInformationAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition, Pro Forma Information [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCrediTlossesWriteoffsInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge-offs - fiscal year 2024</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCrediTlossesWriteoffsInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for credi tlosses writeoffs in current fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCrediTlossesWriteoffsInCurrentFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credi tLosses WriteOffs In Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfOtherAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">(Gain) loss on sale of other assets owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfOtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Disposition of Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfOtherAssets_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Net (gain) loss on sale of other assets owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Credit Quality Indicator [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAcquiredThroughForeclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Foreclosed residential real estate property</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAcquiredThroughForeclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other real estate owned</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RealEstateAcquiredThroughForeclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Real Estate Acquired Through Foreclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Risk Category of Loans by Portfolio Class Based on Year of Origination</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableCreditQualityIndicatorsTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Credit Quality Indicators [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_SecurityExchangeName_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Security Exchange Name</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsOrChangeInAccountingPrincipleTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update and Change in Accounting Principle [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other comprehensive income (loss)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities - available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsMarketableSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Marketable Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NewAccountingPronouncementsPolicyPolicyTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recent Accounting Pronouncements</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Liability Derivatives, Fair Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeFairValueOfDerivativeLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Liability, Subject to Master Netting Arrangement, before Offset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Notes Payable, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesPayable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Notes Payable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialRealEstatePortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialRealEstatePortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial Real Estate Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gain on sales of securities available-for-sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross realized gains</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Gain</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedGain_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Gain on sales of securities available-for-sale</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgricultureRealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Agriculture Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AgricultureRealEstateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Agriculture Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionAcquireeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business Acquisition, Acquiree</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instrument</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Tax expense (benefit)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Comprehensive Income (Loss), Available-for-Sale Securities, Tax, Portion Attributable to Parent, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesTaxPortionAttributableToParent_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Comprehensive Income (Loss), Available-for-Sale Securities, Tax, Portion Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CollateralDependentLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Collateral dependent loans.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CollateralDependentLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Dependent Loans [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CollateralDependentLoansTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral-dependent Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Emerging Growth Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityEmergingGrowthCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Emerging Growth Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_AmendmentFlag_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amendment Flag</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesCarryingAmountNet_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Carrying amount, net of fair value adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesCarryingAmountNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying amount, net of fair value adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesCarryingAmountNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Carrying Amount, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total loans past-due ninety days or more and still accruing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recorded Investment &gt; 90 Days and Accruing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestment90DaysPastDueAndStillAccruing_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, 90 Days or More Past Due, Still Accruing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net change in federal funds purchased and securities sold under agreements to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncreaseDecreaseInFederalFundsPurchasedAndSecuritiesSoldUnderAgreementsToRepurchaseNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Increase (Decrease) in Federal Funds Purchased and Securities Sold under Agreements to Repurchase, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Securities for which Entity has Right to Sell or Repledge [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gross Unrealized Losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TypeOfAdoptionMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssued_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares, Issued</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Annual Amortization of Core Deposit Intangible Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RepaymentPeriodOfLoanWithReasonableReductionOfPrincipalBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Repayment period of loan with a reasonable reduction of principal balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RepaymentPeriodOfLoanWithReasonableReductionOfPrincipalBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repayment Period Of Loan With Reasonable Reduction Of Principal Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_RepaymentPeriodOfLoanWithReasonableReductionOfPrincipalBalance_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Repayment period of loan with reasonable reduction of principal balance.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LeasesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Leases [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Effects of derivatives on consolidated statement of income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gain (loss) recognized on consolidated statements of income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Gain (Loss) on Derivative, Net</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeGainLossOnDerivativeNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative, Gain (Loss) on Derivative, Net, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Changes in the Level 3 Fair-Value Category of Unobservable Inputs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Fair Value, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPosition_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed), Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Purchase of assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NoncashOrPartNoncashAcquisitionNetNonmonetaryAssetsAcquiredLiabilitiesAssumed1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Noncash or Part Noncash Acquisition, Net Nonmonetary Assets Acquired (Liabilities Assumed)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Mortgage-backed Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesIssuedByUSGovernmentSponsoredEnterprisesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage-Backed Securities, Issued by US Government Sponsored Enterprises [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFileNumber_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Act File Number</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Less: Net deferred loan fees and costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnamortizedLoanCommitmentAndOriginationFeesAndUnamortizedDiscountsOrPremiums_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Disposals</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldDisposalsOfLoans_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Disposals of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgedAssetFairValueHedgeCumulativeIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgedAssetFairValueHedgeCumulativeIncreaseDecrease_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedged Asset, Fair Value Hedge, Cumulative Increase (Decrease)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CommercialAndIndustrialMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial and Industrial [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CommercialAndIndustrialMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Commercial And Industrial [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CommercialAndIndustrialMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Commercial and industrial.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pledged Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pledged Status [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianFinancialServicesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Ossian Financial Services, Inc. [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianFinancialServicesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Ossian Financial Services Inc [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OssianFinancialServicesIncMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Ossian Financial Services, Inc.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValueAmortization1_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetAtAmortizedValueAmortization1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Amortized Cost, Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanAndLeasesReceivableExcludingFairValeAdjustmentForInterestSwapHedges_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans after net deferred loan fees and costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanAndLeasesReceivableExcludingFairValeAdjustmentForInterestSwapHedges_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan And Leases Receivable Excluding Fair Vale Adjustment For Interest Swap Hedges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanAndLeasesReceivableExcludingFairValeAdjustmentForInterestSwapHedges_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan and leases receivable excluding fair vale adjustment for interest swap hedges.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Assets, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ParticipatingMortgageLoansAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Participating Mortgage Loans [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Dividend Income, Operating, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Dividends</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividend Income, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Liabilities Assumed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Cash dividends declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DividendsCommonStockCash_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Dividends, Common Stock, Cash</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Financing Receivable, after Allowance for Credit Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Residential mortgage loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Performing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance: loans acquired with deteriorated credit quality</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableNet_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, after Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetsAtAmortizedValueLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Asset at Amortized Cost [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EstimateOfFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Estimate of Fair Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldAdditions_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired in Transfer Accounted for as Debt Securities, Accretable Yield, Additions</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_TimeDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Time Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_TimeDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Time Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_TimeDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Time deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Accrued expenses and other liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccruedLiabilitiesAndOtherLiabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accrued Liabilities and Other Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntitySmallBusiness_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Small Business</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityShellCompany_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Shell Company</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_TitleOfIndividualAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Title of Individual [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Other Real Estate Owned-Residential [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Consumer Real Estate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ResidentialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Residential Portfolio Segment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfDerivatives_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loss on derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_GainLossOnSaleOfDerivatives_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Gain (Loss) on Sale of Derivatives</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Borrowed funds</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpenseFederalHomeLoanBankAndFederalReserveBankAdvancesLongTerm_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense, Federal Home Loan Bank and Federal Reserve Bank Advances, Long-Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfAssetsAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value of assets acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueOfAssetsAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value of Assets Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Total Past Due</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, before Allowance for Credit Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Grand Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NotesReceivableGross_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Grand Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTermTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for credit losses writeoffs term total.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTermTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses Writeoffs Term Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTermTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge-offs - Term Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTermTotal_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Gross charge-offs - Term Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockNoParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, no par value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockNoParValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, No Par Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">HELOC [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Commercial and Industrial [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommercialPortfolioSegmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Commercial &amp; Industrial [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Earnings Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EarningsPerShareTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityAddressAddressLine1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Address, Address Line One</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepurchaseAgreementsResaleAgreementsSecuritiesBorrowedAndSecuritiesLoanedDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Funds Purchased and Securities Sold Under Agreements to Repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepurchaseAgreementsResaleAgreementsSecuritiesBorrowedAndSecuritiesLoanedDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Repurchase Agreements, Resale Agreements, Securities Borrowed, and Securities Loaned Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubstandardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Substandard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubstandardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">6 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubstandardMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Substandard [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Discount rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleMeasurementInput_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Measurement Input</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_EarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Earnings per share.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_EarningsPerShareLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Earnings Per Share [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PeoplesFederalSavingsAndLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Peoples Federal Savings And Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PeoplesFederalSavingsAndLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Peoples Federal Savings And Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PeoplesFederalSavingsAndLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Peoples Federal Savings and Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer list intangible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationAccretionOfFairValueAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Accretion Of Fair Value Adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationAccretionOfFairValueAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amortization (accretion) of fair value adjustments.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationAccretionOfFairValueAdjustments_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net accretion of fair value adjustments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ExcellentAndGoodMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">1-2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ExcellentAndGoodMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Excellent And Good [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_ExcellentAndGoodMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Excellent And Good [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Undistributed Earnings (Loss) Allocated to Participating Securities, Basic, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: undistributed earnings allocated to participating securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Undistributed Earnings (Loss) Allocated to Participating Securities, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total interest income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestAndDividendIncomeOperating_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest and Dividend Income, Operating</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement Location [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net unrealized gain (loss) on available-for-sale securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax_lbl" xlink:role="http://www.xbrl.org/2003/role/label">OCI, Debt Securities, Available-for-Sale, Unrealized Holding Gain (Loss), before Adjustment and Tax</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Taxes, Miscellaneous, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Franchise taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TaxesExcludingIncomeAndExciseTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Taxes, Miscellaneous</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationOfCustomerListIntangible_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of customer list intangible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationOfCustomerListIntangible_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Of Customer List Intangible</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AmortizationOfCustomerListIntangible_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amortization of customer list intangible.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Term Debt, Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LongtermDebtTypeAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Type [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ProfitLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss), Including Portion Attributable to Noncontrolling Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsNonrecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value on Nonrecurring Basis [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementsNonrecurringMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Nonrecurring [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualWithNoAllowanceForCreditLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Nonaccrual with no allowance for credit loss.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualWithNoAllowanceForCreditLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Nonaccrual With No Allowance For Credit Loss [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonaccrualWithNoAllowanceForCreditLossMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Nonaccrual with No Allowance for Credit Loss [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Debt instrument, frequency of periodic payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentFrequencyOfPeriodicPayment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Instrument, Frequency of Periodic Payment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueInputsLevel2Member_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Inputs, Level 2 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableGrossAllowanceAndNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountsNotesLoansAndFinancingReceivableGrossAllowanceAndNetAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounts, Notes, Loans and Financing Receivable, Gross, Allowance, and Net [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentByClassOfFinancingReceivableAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonInterestBearingDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Non Interest Bearing Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonInterestBearingDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Non Interest Bearing Deposits [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_NonInterestBearingDepositsMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Non interest bearing deposits.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Borrowings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Principal</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtInstrumentCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Term Debt, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Product and Service</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="srt_ProductOrServiceAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Product and Service [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Purchase of treasury stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockValueAcquiredCostMethod_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Value, Acquired, Cost Method</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total non-accrual loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Investment in nonaccrual loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentNonaccrualStatus_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Nonaccrual</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Class of Financing Receivable</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRecordedInvestmentClassOfFinancingReceivableDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Class of Financing Receivable [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_Security12bTitle_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Title of 12(b) Security</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Stock-based compensation expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockIssuedDuringPeriodValueShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNetInterestIncomeBeforeProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Interest Income - Before Provision for Credit Losses and Unfunded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNetInterestIncomeBeforeProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Net Interest Income Before Provision For Loan Losses And Unfunded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNetInterestIncomeBeforeProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisitions pro forma net interest income before provision for loan losses and unfunded.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAndUnfundedCommitmentLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Allowance for credit losses and unfunded commitment liability.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAndUnfundedCommitmentLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance For Credit Losses And Unfunded Commitment Liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AllowanceForCreditLossesAndUnfundedCommitmentLiability_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Allowance for credit losses and unfunded commitment liability</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Assets Measured at Fair Value on Recurring Basis</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsNumberOfContracts2_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Number of contracts modified</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdjustmentsForNewAccountingPronouncementsAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Standards Update [Axis]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralPledgedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Collateral Dependent [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CollateralPledgedMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Collateral Pledged [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Treasury Stock [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TreasuryStockCommonMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Treasury Stock, Common [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AccountingChangesAndErrorCorrectionsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Accounting Changes and Error Corrections [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfNotesPricesOnPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Percentage of notes prices on principal amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfNotesPricesOnPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Percentage Of Notes Prices On Principal Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PercentageOfNotesPricesOnPrincipalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Percentage of notes prices on principal amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Deposits_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Deposits_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Deposits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash Flows from Investing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Investing Activities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization of subordinated note issuance costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationOfFinancingCosts_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization of Debt Issuance Costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Reported Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CarryingReportedAmountFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Reported Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestRateSwapMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Rate Swap [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaIncomeLossBeforeIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Income Before Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaIncomeLossBeforeIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Income Loss Before Income Taxes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaIncomeLossBeforeIncomeTaxes_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisitions pro forma income loss before income taxes.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Portion at Fair Value Measurement [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PortionAtFairValueFairValueDisclosureMember_lbl" xlink:role="http://fasb.org/us-gaap/role/label/axisDefault">Portion at Fair Value Measurement [Member] [Default]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnallocatedFinancingReceivablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unallocated [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnallocatedFinancingReceivablesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unallocated Financing Receivables [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Long-Lived Tangible Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PropertyPlantAndEquipmentTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Long-Lived Tangible Asset [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanReceivableWeightedAverageUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan receivable weighted average life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanReceivableWeightedAverageUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Receivable Weighted Average Useful Life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoanReceivableWeightedAverageUsefulLife_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loan receivable weighted average useful life.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubsequentEventTable_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subsequent Event [Table]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Dividends Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash dividends declared, per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockDividendsPerShareDeclared_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Dividends, Per Share, Declared</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessAcquisitionSharePrice_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisition, Share Price</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_StockIssuedDuringPeriodDirectorsStockAwardsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Director stock awards, shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_StockIssuedDuringPeriodDirectorsStockAwardsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Directors Stock Awards Shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_StockIssuedDuringPeriodDirectorsStockAwardsShares_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period directors stock awards shares.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseExistenceOfOptionToTerminate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Existence of Option to Terminate [true false]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenDownValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Business combination, premises and equipment written down value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenDownValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Identifiable Assets In Premises And Equipment Written Down Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenDownValue_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination identifiable assets in premises and equipment written down value.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, After one year through five years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsFairValue_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, after Year One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Loans after net deferred loan fees and costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans after net deferred loan fees and costs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableNetOfDeferredIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans and Leases Receivable, Net of Deferred Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2024</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Amortization expense for 2023</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnfundedLoanCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Unfunded Loan Commitment [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_UnfundedLoanCommitmentMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Unfunded loan commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTotalLabel">Gross Unrealized Losses, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Unrealized Loss Position, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableNonaccrualInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Nonaccrual, Interest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableNonaccrualInterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Interest income on nonaccrual loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansInProcessOfForeclosureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Residential real estate properties foreclosure proceedings</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageLoansInProcessOfForeclosureAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Mortgage Loans in Process of Foreclosure, Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AtmExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">ATM expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AtmExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Atm Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_AtmExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Amount of expenses incurred for ATM expenses during the reporting period.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Common Stock, Shares, Outstanding, Ending Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Common Stock, Shares, Outstanding, Beginning Balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Common stock, shares outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CommonStockSharesOutstanding_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Common Stock, Shares, Outstanding</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value, Mortgage-backed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_MortgageBackedSecuritiesAvailableForSaleFairValueDisclosure_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Security, Mortgage-Backed, Available-for-Sale, Fair Value Disclosure</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTwoYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Gross charge-offs - fiscal year 2022</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTwoYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable allowance for credit losses writeoffs two years before latest fiscal year.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTwoYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Allowance For Credit Losses Writeoffs Two Years Before Latest Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfAccountsNotesLoansAndFinancingReceivableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Supplemental cash flow information:</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SupplementalCashFlowElementsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Supplemental Cash Flow Elements [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairedFinancingReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Impaired Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ImpairedFinancingReceivablesTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Impaired Financing Receivables [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BankOfGenevaAndOssianStateBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Geneva in 2019 and Ossian State Bank in 2021 [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BankOfGenevaAndOssianStateBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bank Of Geneva And Ossian State Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BankOfGenevaAndOssianStateBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Bank Of Geneva and Ossian State Bank.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Estimated Fair Values and Related Carrying or Notional Amounts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Measurements, Recurring and Nonrecurring [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Greater Than 90 Days [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablesEqualToGreaterThan90DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, Equal to or Greater than 90 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_IncomeStatementLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Income Statement Location [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentType_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Type</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentPerformanceStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financial Instrument Performance Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancialInstrumentPerformanceStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Instrument Performance Status [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Repayment of FHLB advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_RepaymentsOfFederalHomeLoanBankBorrowings_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payments of FHLBank Borrowings, Financing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable Portfolio Segment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivablePortfolioSegmentDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Portfolio Segment [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value by Liability Class</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueLiabilitiesMeasuredOnRecurringBasisUnobservableInputReconciliationByLiabilityClassDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value by Liability Class [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by (used in) investing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Investing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetPledgedAsCollateralWithoutRightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Asset Pledged as Collateral without Right [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetPledgedAsCollateralWithoutRightMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Pledged as Collateral without Right [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_DocumentQuarterlyReport_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Document Quarterly Report</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Employee benefits</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_EmployeeBenefitsAndShareBasedCompensation_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Employee Benefits and Share-Based Compensation</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankServicingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Customer Service Fees [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankServicingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bank Servicing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Notional Value</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeNotionalAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Notional Amount</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LesseeOperatingLeaseOptionToTerminate_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Lessee, Operating Lease, Option to Terminate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net earnings available to common shareholders</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Income (Loss) Available to Common Stockholders, Basic</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedTerseLabel">Charge Offs</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Loans charged off</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AllowanceForLoanAndLeaseLossesWriteOffs_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Allowance for Loan and Lease Losses, Writeoff</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Revolving, Converted to Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableRevolvingConvertedToTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Revolving Loans Converted to Term</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net cash provided by financing activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Net Cash Provided by (Used in) Financing Activities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Pledged Status</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PledgedStatusAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Pledged Status [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="dei_EntityFilerCategory_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Entity Filer Category</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Available-for-Sale Securities, Debt Maturities [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BalanceSheetLocationDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Balance Sheet Location [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedBorrowingsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Subordinated Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SubordinatedBorrowingsDisclosureTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Subordinated Borrowings Disclosure [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Noninterest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Noninterest Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNoninterestIncome_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisitions pro forma noninterest income.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalDepositInsuranceCorporationPremiumExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">FDIC assessment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FederalDepositInsuranceCorporationPremiumExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Federal Deposit Insurance Corporation Premium Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_VariableRateAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Variable Rate [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Financing receivable term loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable Term Loan</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FinancingReceivableTermLoan_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Term Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNetInterestIncomeAfterProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Net Interest Income After Provision for Credit Losses and Unfunded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNetInterestIncomeAfterProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Acquisitions Pro Forma Net Interest Income After Provision For Loan Losses And Unfunded</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessAcquisitionsProFormaNetInterestIncomeAfterProvisionForLoanLossesAndUnfunded_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business acquisitions pro forma net interest income after provision for loan losses and unfunded.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableWithVariableRatesOfInterest1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Distribution of variable rate loans by major loan category, Variable Rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansReceivableWithVariableRatesOfInterest1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Receivable with Variable Rates of Interest</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_QualifiedAffordableHousingProjectInvestmentsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Qualified affordable housing project investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_QualifiedAffordableHousingProjectInvestmentsCommitment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Qualified Affordable Housing Project Investments, Commitment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldMovementTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Changes in Accretable Yield or Income Expected to be Collected</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldMovementTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired In Transfer Accounted For As Debt Securities Accretable Yield Movement Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldMovementTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Certain loans acquired in transfer accounted for as debt securities accretable yield movement.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_Liabilities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Liabilities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeInstrumentsAndHedgingActivitiesDisclosuresLineItems_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Instruments and Hedging Activities Disclosures [Line Items]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AffordableHousingProgramTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Qualified Affordable Housing Project Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AffordableHousingProgramTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Affordable Housing Program [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Remaining economic useful life</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FiniteLivedIntangibleAssetsRemainingAmortizationPeriod1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite-Lived Intangible Assets, Remaining Amortization Period</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAverageRemainingMaturity1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Weighted Average Remaining Maturity (years)</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAverageRemainingMaturity1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative, Average Remaining Maturity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other securities, at cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination Recognized Identifiable Assets Acquired And Liabilities Assumed Other Securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherSecurities_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combination recognized identifiable assets acquired and liabilities assumed other securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Impairment on mortgage servicing rights</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Asset Impairment Charges</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AssetImpairmentCharges_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Asset Impairment Charges, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Payments for Origination and Purchases of Loans Held-for-sale, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Originations of loans held for sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsForOriginationAndPurchasesOfLoansHeldForSale_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Payment for Origination and Purchase, Loan, Held-for-Sale</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total stockholders' equity</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodStartLabel">Beginning balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/periodEndLabel">Ending balance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StockholdersEquity_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Equity, Attributable to Parent</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">USD-SOFR-OIS [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuredOvernightFinancingRateSofrOvernightIndexSwapRateMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableModificationsSubsequentDefaultNumberOfContracts1_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Modifications to borrower experiencing financial difficulty</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gross realized losses</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Realized Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Fair value adjustment of loans acquired and accounted</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair value adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Certain Loans Acquired In Transfer Accounted For As Debt Securities Fair Value Adjustment</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Certain loans acquired in transfer accounted for as debt securities fair value adjustment.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OtherLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Other Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OtherLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Loan [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_OtherLoanMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Other loan.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationsLoansAcquiredCarryingAmountTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Summary of Carrying Amount of Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationsLoansAcquiredCarryingAmountTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combinations Loans Acquired Carrying Amount Table [Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_BusinessCombinationsLoansAcquiredCarryingAmountTableTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Business combinations loans acquired carrying amount.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables30To59DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">30 to 59 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivables30To59DaysPastDueMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financial Asset, 30 to 59 Days Past Due [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_TransfersAndServicingAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Transfers and Servicing [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Other Investments, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Total committed securities</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_OtherInvestments_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Other Investments</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Net income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_NetIncomeLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Net Income</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total interest expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InterestExpense_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest Expense</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_StockIssuedDuringPeriodDirectorsStockAwards_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Director stock award</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_StockIssuedDuringPeriodDirectorsStockAwards_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Stock Issued During Period Directors Stock Awards</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_StockIssuedDuringPeriodDirectorsStockAwards_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Stock issued during period directors stock awards.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Bank owned life insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BankOwnedLifeInsurance_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Bank Owned Life Insurance</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSubordinatedBorrowingTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Schedule of Subordinated Notes</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ScheduleOfSubordinatedBorrowingTextBlock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Schedule of Subordinated Borrowing [Table Text Block]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_StatementOfFinancialPositionAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Statement of Financial Position [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortized Cost, After one year through five years</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost, Maturity, Allocated and Single Maturity Date, after Year One Through Five</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FiniteLivedTangibleAssetsAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Recognition of core deposit tangible asset with acquired purchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FiniteLivedTangibleAssetsAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Finite Lived Tangible Assets Acquired</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_FiniteLivedTangibleAssetsAcquired_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Finite lived tangible assets acquired.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Prepayment rate</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Servicing Assets and Servicing Liabilities at Fair Value, Assumptions Used to Estimate Fair Value, Prepayment Speed</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_USStatesAndPoliticalSubdivisionsTaxableDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">State and Local Governments Taxable[Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_USStatesAndPoliticalSubdivisionsTaxableDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">U S States And Political Subdivisions Taxable Debt Securities [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_USStatesAndPoliticalSubdivisionsTaxableDebtSecuritiesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">US states and political subdivisions taxable debt securities.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Share price per share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SharesIssuedPricePerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Shares Issued, Price Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeSecuritiesTypeDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Customer Securities for which Entity has Right to Sell or Repledge, Securities Type [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Loans</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans - Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoansAndLeasesReceivableGrossCarryingAmount_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans and Leases Receivable, Gross</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CashConsiderationPayableOnAcquisitionPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Cash payment for exchange of each share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CashConsiderationPayableOnAcquisitionPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Cash Consideration Payable On Acquisition Per Share</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_CashConsiderationPayableOnAcquisitionPerShare_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Cash consideration payable on acquisition, per share.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoansPastDueOverEightyNineDaysStillAccruingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Loans past due over eighty nine days still accruing.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoansPastDueOverEightyNineDaysStillAccruingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loans Past Due Over Eighty Nine Days Still Accruing [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_LoansPastDueOverEightyNineDaysStillAccruingMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans Past Due Over 89 Days Still Accruing</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AvailableForSaleDebtSecuritiesAmortizedCostBasis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Amortized Cost</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Advance from Federal Home Loan Bank, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Federal Home Loan Bank (FHLB) advances</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AdvancesFromFederalHomeLoanBanks_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Advance from Federal Home Loan Bank</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Amortization expense recognized with qualified affordable housing project</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Amortization Method Qualified Affordable Housing Project Investments, Amortization</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestAndFeeIncomeLoansAndLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loans, Including Fees [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestAndFeeIncomeLoansAndLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Interest And Fee Income Loans And Leases [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_InterestAndFeeIncomeLoansAndLeasesMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Interest And Fee Income Loans And Leases.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Total Assets Purchased</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Carrying Amount of the Hedged Assets</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Derivative Asset</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DerivativeAssets_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Derivative Asset, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Less: average unvested restricted shares</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_WeightedAverageNumberOfSharesRestrictedStock_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Weighted Average Number of Shares, Restricted Stock</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoanRestructuringModificationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Loan Restructuring Modification</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_LoanRestructuringModificationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Loan Restructuring Modification [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_InvestmentsInAffordableHousingProjectsAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Investments in Affordable Housing Projects [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">2021</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FinancingReceivableOriginatedThreeYearsBeforeLatestFiscalYear_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Gross Unrealized Losses, Twelve Months and Over</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Debt Securities, Available-for-Sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PerpetualFederalSavingsBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Perpetual Federal Savings Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PerpetualFederalSavingsBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Perpetual Federal Savings Bank [Member]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="fmao_PerpetualFederalSavingsBankMember_lbl" xlink:role="http://www.xbrl.org/2003/role/documentation">Perpetual federal savings bank.</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueDisclosuresAbstract_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Disclosures [Abstract]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Fair Value Hierarchy and NAV</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueByFairValueHierarchyLevelAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Fair Value Hierarchy and NAV [Axis]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Measurement Frequency</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_FairValueMeasurementFrequencyDomain_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Measurement Frequency [Domain]</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/verboseLabel">Repurchase agreements, Remaining contractual maturity of the agreements</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/totalLabel">Securities Sold under Agreements to Repurchase, Total</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/terseLabel">Securities sold under agreements to repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_SecuritiesSoldUnderAgreementsToRepurchase_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Securities Sold under Agreements to Repurchase</link:label>
          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_HedgingDesignationAxis_lbl" xlink:role="http://www.xbrl.org/2003/role/label">Hedging Designation [Axis]</link:label>
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          <link:label xml:lang="en-US" xlink:type="resource" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_lbl" xlink:role="http://www.xbrl.org/2009/role/negatedLabel">Additions to premises and equipment</link:label>
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  <xsd:element id="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenDownValue" name="BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenDownValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_NumberOfDirectorReceivedShares" name="NumberOfDirectorReceivedShares" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_ScheduleOfCumulativeBasisAdjustmentsForInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesTableTextBlock" name="ScheduleOfCumulativeBasisAdjustmentsForInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_BusinessAcquisitionsProFormaNetInterestIncomeBeforeProvisionForLoanLossesAndUnfunded" name="BusinessAcquisitionsProFormaNetInterestIncomeBeforeProvisionForLoanLossesAndUnfunded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_BusinessCombinationAverageRemainingUsefulLife" name="BusinessCombinationAverageRemainingUsefulLife" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_DistributionOfFixedRateLoansAndVariableRateLoansByMajorLoanCategoryTableTextBlock" name="DistributionOfFixedRateLoansAndVariableRateLoansByMajorLoanCategoryTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_SummaryOfInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesOfFixedRateReceivablesTableTextBlock" name="SummaryOfInterestRateSwapDerivativesDesignatedAsFairValueAccountingHedgesOfFixedRateReceivablesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_CashCashEquivalentsAndFederalFundsSoldFairValueDisclosure" name="CashCashEquivalentsAndFederalFundsSoldFairValueDisclosure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_OssianFinancialServiceIncorporatedMember" name="OssianFinancialServiceIncorporatedMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_SatisfactoryMonitoredMember" name="SatisfactoryMonitoredMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_LitigationAndAnyDeficiencyChargedOffPeriod" name="LitigationAndAnyDeficiencyChargedOffPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_LoansPastDueOverEightyNineDaysStillAccruingMember" name="LoansPastDueOverEightyNineDaysStillAccruingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_BusinessAcquisitionsProFormaIncomeTaxesExpenseBenefit" name="BusinessAcquisitionsProFormaIncomeTaxesExpenseBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_FeesAndCommissionsIncomeAbstract" name="FeesAndCommissionsIncomeAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalHomeLoanBankAdvances" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenUpValue" name="BusinessCombinationIdentifiableAssetsInPremisesAndEquipmentWrittenUpValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_NumberOfStrataWhichIncludedLoan" name="NumberOfStrataWhichIncludedLoan" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_LossMember" name="LossMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_StockIssuedDuringPeriodDirectorsStockAwards" name="StockIssuedDuringPeriodDirectorsStockAwards" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsTwoYearsBeforeLatestFiscalYear" name="FinancingReceivableAllowanceForCreditLossesWriteoffsTwoYearsBeforeLatestFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_FinancingReceivableOriginatedFourOrMoreYearsBeforeLatestFiscalYear" name="FinancingReceivableOriginatedFourOrMoreYearsBeforeLatestFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_LimberlostBancsharesIncMember" name="LimberlostBancsharesIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_RiskCategoryOfLoansTableTextBlock" name="RiskCategoryOfLoansTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_CashConsiderationPayableOnAcquisitionPerShare" name="CashConsiderationPayableOnAcquisitionPerShare" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_PaymentsToAcquireAvailableForSaleSecuritiesDebtIncludingAdjustmentForSecuritiesAcquiredInAcquisition" name="PaymentsToAcquireAvailableForSaleSecuritiesDebtIncludingAdjustmentForSecuritiesAcquiredInAcquisition" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_AtmExpense" name="AtmExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_FairValueOfFederalHomeLoanBankAdvancesValuationAmount" name="FairValueOfFederalHomeLoanBankAdvancesValuationAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_PercentageOfCaptiveClaimsTransactionOfInterestLossRatio" name="PercentageOfCaptiveClaimsTransactionOfInterestLossRatio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherLiabilities" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAccruedExpensesAndOtherLiabilities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_DelinquentPeriodForChargingDownOrAllocatedCommercialAndAgriculturalCredits" name="DelinquentPeriodForChargingDownOrAllocatedCommercialAndAgriculturalCredits" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_AmortizationOfCustomerListIntangible" name="AmortizationOfCustomerListIntangible" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldMovementTableTextBlock" name="CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAccretableYieldMovementTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_FundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects" name="FundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_MaturedSecurityProceedsNotReceived" name="MaturedSecurityProceedsNotReceived" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_CaptivesProvisionExistencePeriod" name="CaptivesProvisionExistencePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_NumberOfClientsAssetsUnderManagement" name="NumberOfClientsAssetsUnderManagement" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_PeoplesSidneyFinancialCorporationMember" name="PeoplesSidneyFinancialCorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_ConsumerOtherFinancingReceivablesMember" name="ConsumerOtherFinancingReceivablesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_GoodwillDeductibleForTaxPurposePeriod" name="GoodwillDeductibleForTaxPurposePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_NonInterestBearingDepositsMember" name="NonInterestBearingDepositsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_ElevenAgriculturalRealEstateStrataMember" name="ElevenAgriculturalRealEstateStrataMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_CompensationAnnualBasisCommitteeAward" name="CompensationAnnualBasisCommitteeAward" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_AllowanceForCreditLossesAndUnfundedCommitmentLiabilityNetOfTax" name="AllowanceForCreditLossesAndUnfundedCommitmentLiabilityNetOfTax" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_UnfundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects" name="UnfundedCommitmentsRelatedToTheInvestmentsInQualifiedAffordableHousingProjects" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearingTimeDeposits" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearingTimeDeposits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalFundsSold" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedFederalFundsSold" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_OtherLoanMember" name="OtherLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_NumberOfSecurityTransfer" name="NumberOfSecurityTransfer" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_ConsumerRealEstateLoanMember" name="ConsumerRealEstateLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_AmortizationAccretionOfFairValueAdjustments" name="AmortizationAccretionOfFairValueAdjustments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_CommercialAndIndustrialMember" name="CommercialAndIndustrialMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingMortgageBackedSecurities" name="AvailableForSaleSecuritiesDebtMaturitiesFairValueExcludingMortgageBackedSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_PeoplesFederalSavingsAndLoanMember" name="PeoplesFederalSavingsAndLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_NumberOfSharesElectToReceiveInMergerAgreement" name="NumberOfSharesElectToReceiveInMergerAgreement" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_RealEstateServicingRightsMember" name="RealEstateServicingRightsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_InterestPayableFairValueDisclosure" name="InterestPayableFairValueDisclosure" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsGrandNet" name="FinancingReceivableAllowanceForCreditLossesWriteoffsGrandNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_PaymentPerformanceMember" name="PaymentPerformanceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_FiniteLivedTangibleAssetsAcquired" name="FiniteLivedTangibleAssetsAcquired" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_OhioEquityFundForHousingLimitedPartnershipMember" name="OhioEquityFundForHousingLimitedPartnershipMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_PaymentsToAcquireSalesOfOtherSecurities" name="PaymentsToAcquireSalesOfOtherSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_FinancingReceivableAllowanceForExpectedCreditLosses" name="FinancingReceivableAllowanceForExpectedCreditLosses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_CommercialAndIndustrialAndIndustrialDevelopmentBondsMember" name="CommercialAndIndustrialAndIndustrialDevelopmentBondsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_AdditionalFundsAdvanced" name="AdditionalFundsAdvanced" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_CapitalizedAdditionsToServicingRights" name="CapitalizedAdditionsToServicingRights" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFiscalYearBeforeCurrentFiscalYear" name="FinancingReceivableAllowanceForCreditLossesWriteoffsFiscalYearBeforeCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_SpecificAllocationOnPrincipalBalanceMember" name="SpecificAllocationOnPrincipalBalanceMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_MortgageBackedSecuritiesAvailableForSaleAmortizedCost" name="MortgageBackedSecuritiesAvailableForSaleAmortizedCost" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_BusinessAcquisitionsProFormaNetInterestIncomeAfterProvisionForLoanLossesAndUnfunded" name="BusinessAcquisitionsProFormaNetInterestIncomeAfterProvisionForLoanLossesAndUnfunded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_EarningsPerShareLineItems" name="EarningsPerShareLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_OssianStateBankMember" name="OssianStateBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_ActivityInOtherSecuritiesAtCostAbstract" name="ActivityInOtherSecuritiesAtCostAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_ExcellentAndGoodMember" name="ExcellentAndGoodMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_FairValueForCertificateOfDepositValuationAmount" name="FairValueForCertificateOfDepositValuationAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_AgriculturalRealEstateLoansMember" name="AgriculturalRealEstateLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_BankOfGenevaMember" name="BankOfGenevaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_BusinessAcquisitionsProFormaProvisionForLoanLossesAndUnfunded" name="BusinessAcquisitionsProFormaProvisionForLoanLossesAndUnfunded" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_PaymentOfCapitalCallsToLowIncomeHousingInvestments" name="PaymentOfCapitalCallsToLowIncomeHousingInvestments" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_NumberOfFullServiceOffices" name="NumberOfFullServiceOffices" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_UnfundedLoanCommitmentAndLettersOfCreditMember" name="UnfundedLoanCommitmentAndLettersOfCreditMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_ReEvaluationPeriodForRealEstate" name="ReEvaluationPeriodForRealEstate" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearing" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment" name="CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesFairValueAdjustment" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_IncreaseDecreaseInFinancingReceivableModifications" name="IncreaseDecreaseInFinancingReceivableModifications" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_TwoOneToFourFamilyRealEstateStrataMember" name="TwoOneToFourFamilyRealEstateStrataMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_NumberOfDirectorsReceivedShares" name="NumberOfDirectorsReceivedShares" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoninterestBearing" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoninterestBearing" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_LoansServicedForOthersUnpaidPrincipalAmount" name="LoansServicedForOthersUnpaidPrincipalAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_SeniorManagementMember" name="SeniorManagementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_FinancingReceivableAllowanceForCrediTlossesWriteoffsInCurrentFiscalYear" name="FinancingReceivableAllowanceForCrediTlossesWriteoffsInCurrentFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_NumberOfDirectorsReceivedProratedDollarValueOfShares" name="NumberOfDirectorsReceivedProratedDollarValueOfShares" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_FinancingReceivableTermLoan" name="FinancingReceivableTermLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_BusinessAcquisitionShareOwnedSubjectToAdjustment" name="BusinessAcquisitionShareOwnedSubjectToAdjustment" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_ImpairedLoansMember" name="ImpairedLoansMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_FinancialCollateralDependentLoans" name="FinancialCollateralDependentLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepositsAbstract" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDepositsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringWriteDown" name="FinancingReceivablesImpairedNumberOfTroubledDebtRestructuringWriteDown" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_ContributionProvidedByBothRecoveriesAndProvisionAlongWithReductionOfAllowanceCausedByChargeOffsTableTextBlock" name="ContributionProvidedByBothRecoveriesAndProvisionAlongWithReductionOfAllowanceCausedByChargeOffsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_CapitalizedServiceRightAssetsFairMarketValue" name="CapitalizedServiceRightAssetsFairMarketValue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_MortgageServicingRightsMember" name="MortgageServicingRightsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_BusinessCombinationsLoansAcquiredCarryingAmountTableTextBlock" name="BusinessCombinationsLoansAcquiredCarryingAmountTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansNet" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansNet" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_DelinquentPeriodForChargingDownConsumerLoans" name="DelinquentPeriodForChargingDownConsumerLoans" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_AdditionalFundsAdvancedWithImapiredLoans" name="AdditionalFundsAdvancedWithImapiredLoans" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_PerpetualFederalSavingsBankMember" name="PerpetualFederalSavingsBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_PerpetualFederalSavingBankMember" name="PerpetualFederalSavingBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_EarningsPerShareTable" name="EarningsPerShareTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_OfficeConstructionInProgress" name="OfficeConstructionInProgress" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsThreeYearsBeforeLatestFiscalYear" name="FinancingReceivableAllowanceForCreditLossesWriteoffsThreeYearsBeforeLatestFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_FederalReservesBankTermFundingProgramMember" name="FederalReservesBankTermFundingProgramMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_ProvisionForCreditLossesoffBalanceSheetCreditExposures" name="ProvisionForCreditLossesoffBalanceSheetCreditExposures" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_BusinessAcquisitionEquityInterestIssuedOrIssuablePerShareOfAcquiredEntity" name="BusinessAcquisitionEquityInterestIssuedOrIssuablePerShareOfAcquiredEntity" type="xbrli:decimalItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_MaximumTimeForReevaluation" name="MaximumTimeForReevaluation" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_PercentageOfNotesPricesOnPrincipalAmount" name="PercentageOfNotesPricesOnPrincipalAmount" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_GenevaMember" name="GenevaMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_CapitalizedServiceRightAssetsIncludedInOtherAssets" name="CapitalizedServiceRightAssetsIncludedInOtherAssets" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_FinancingReceivableAllowanceForCreditLossesWriteoffsFourOrMoreYearsBeforeLatestFiscalYear" name="FinancingReceivableAllowanceForCreditLossesWriteoffsFourOrMoreYearsBeforeLatestFiscalYear" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_PercentageOfCaptiveClaimsListedTransactionLossRatio" name="PercentageOfCaptiveClaimsListedTransactionLossRatio" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false"/>
  <xsd:element id="fmao_CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodTableTextBlock" name="CertainLoansAcquiredInTransferAccountedForAsDebtSecuritiesAcquiredDuringPeriodTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_InterestAndDividendIncomeOperatingMember" name="InterestAndDividendIncomeOperatingMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_AdamsCountyFinancialResourcesMember" name="AdamsCountyFinancialResourcesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_AvailableForSaleSecuritiesGrossRealizedGainLossTaxExpensesBenefit" name="AvailableForSaleSecuritiesGrossRealizedGainLossTaxExpensesBenefit" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherSecurities" name="BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherSecurities" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_NonaccrualMember" name="NonaccrualMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_AgriculturalLoanMember" name="AgriculturalLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_OssianFinancialServicesIncMember" name="OssianFinancialServicesIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_BusinessAcquisitionsProFormaNoninterestIncome" name="BusinessAcquisitionsProFormaNoninterestIncome" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit"/>
  <xsd:element id="fmao_InterestAndFeeIncomeLoansAndLeasesMember" name="InterestAndFeeIncomeLoansAndLeasesMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_ActivitiesInAllowanceForCreditLossesTableTextBlock" name="ActivitiesInAllowanceForCreditLossesTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_NonaccrualWithNoAllowanceForCreditLossMember" name="NonaccrualWithNoAllowanceForCreditLossMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour" name="FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFour" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_NonaccrualNumberOfBorrower" name="NonaccrualNumberOfBorrower" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false"/>
  <xsd:element id="fmao_BankOfGenevaAndOssianStateBankMember" name="BankOfGenevaAndOssianStateBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
  <xsd:element id="fmao_BusinessAcquisitionsProFormaNoninterestExpense" name="BusinessAcquisitionsProFormaNoninterestExpense" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit"/>
  <xsd:element id="fmao_FederalHomeLoanBankOfCincinnatiAndIndianapolisStockMember" name="FederalHomeLoanBankOfCincinnatiAndIndianapolisStockMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true"/>
</xsd:schema>
