XML 26 R31.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Loans - Risk Category of Loans by Portfolio Class (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | $ 615,165 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount | $ 622,345 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Agricultural Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 51,467 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember | 50,895 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember
Agricultural Real Estate [Member] | 1-2 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 4,829 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember | 4,319 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember
Agricultural Real Estate [Member] | 3 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 16,349 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember | 15,780 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember
Agricultural Real Estate [Member] | 4 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 29,674 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember | 30,472 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember
Agricultural Real Estate [Member] | 5 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 332 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 111 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Agricultural Real Estate [Member] | 6 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 212 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 213 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Agricultural [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 71,474 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember | 74,611 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember
Agricultural [Member] | 1-2 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 9,098 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember | 11,490 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember
Agricultural [Member] | 3 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 25,784 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember | 26,871 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember
Agricultural [Member] | 4 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 36,611 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember | 36,225 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember
Agricultural [Member] | 5 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 54 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember |
Agricultural [Member] | 7 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 24 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 25 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Commercial Real Estate [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 271,676 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember | 270,188 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember
Commercial Real Estate [Member] | 1-2 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 983 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember | 1,072 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember
Commercial Real Estate [Member] | 3 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 33,466 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember | 34,229 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember
Commercial Real Estate [Member] | 4 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 231,346 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember | 225,015 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember
Commercial Real Estate [Member] | 5 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 2,423 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 7,083 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Commercial Real Estate [Member] | 6 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 2,274 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 2,080 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Commercial Real Estate [Member] | 7 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 709 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 709 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Commercial and Industrial [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 95,128 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember | 100,126 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember
Commercial and Industrial [Member] | 1-2 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 1,817 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember | 1,771 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = fmao_ExcellentAndGoodMember
Commercial and Industrial [Member] | 3 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 15,864 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember | 15,582 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember
Commercial and Industrial [Member] | 4 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 74,948 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember | 80,079 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember
Commercial and Industrial [Member] | 5 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 2,179 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember | 2,299 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SpecialMentionMember
Commercial and Industrial [Member] | 6 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 178 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember | 165 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_SubstandardMember
Commercial and Industrial [Member] | 7 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 236 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember | 230 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember / us-gaap_InternalCreditAssessmentAxis = us-gaap_DoubtfulMember
Industrial Development Bonds [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 4,673 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember | 4,698 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember
Industrial Development Bonds [Member] | 3 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | 4,264 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember | 4,289 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMember
Industrial Development Bonds [Member] | 4 [Member] |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans - Gross | $ 409 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember | $ 409 us-gaap_LoansAndLeasesReceivableGrossCarryingAmount / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember / us-gaap_InternalCreditAssessmentAxis = fmao_SatisfactoryMonitoredMember

X
- Details
Name: | us-gaap_AccountsNotesAndLoansReceivableLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=28367877&loc=d3e4428-111522 + Details
Name: | us-gaap_LoansAndLeasesReceivableGrossCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=fmao_AgriculturalLoanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=fmao_AgricultureRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=fmao_CommercialAndIndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=fmao_IndustrialDevelopmentBondsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_FinancialInstrumentAxis=us-gaap_CommercialRealEstateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |