XML 58 R27.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Loans - Maturity Schedule by Major Category of Loans (Detail) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2015
--- | ---
Consumer Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Maturity schedule by major category of loans, Within One Year | $ 10,983 fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear / us-gaap_FinancialInstrumentAxis = fmao_ConsumerRealEstateMember
Maturity schedule by major category of loans, After One Year Within Five Years | 19,428 fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear / us-gaap_FinancialInstrumentAxis = fmao_ConsumerRealEstateMember
Maturity schedule by major category of loans, After Five Years | 66,731 fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears / us-gaap_FinancialInstrumentAxis = fmao_ConsumerRealEstateMember
Agricultural Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Maturity schedule by major category of loans, Within One Year | 3,713 fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember
Maturity schedule by major category of loans, After One Year Within Five Years | 13,800 fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember
Maturity schedule by major category of loans, After Five Years | 33,954 fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears / us-gaap_FinancialInstrumentAxis = fmao_AgricultureRealEstateMember
Agricultural [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Maturity schedule by major category of loans, Within One Year | 40,522 fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember
Maturity schedule by major category of loans, After One Year Within Five Years | 26,855 fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember
Maturity schedule by major category of loans, After Five Years | 4,097 fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears / us-gaap_FinancialInstrumentAxis = fmao_AgriculturalLoanMember
Commercial Real Estate [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Maturity schedule by major category of loans, Within One Year | 30,529 fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember
Maturity schedule by major category of loans, After One Year Within Five Years | 84,230 fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember
Maturity schedule by major category of loans, After Five Years | 156,917 fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears / us-gaap_FinancialInstrumentAxis = us-gaap_CommercialRealEstateMember
Commercial and Industrial [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Maturity schedule by major category of loans, Within One Year | 55,841 fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember
Maturity schedule by major category of loans, After One Year Within Five Years | 34,222 fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember
Maturity schedule by major category of loans, After Five Years | 5,065 fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears / us-gaap_FinancialInstrumentAxis = fmao_CommercialAndIndustrialMember
Consumer [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Maturity schedule by major category of loans, Within One Year | 4,813 fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear / us-gaap_FinancialInstrumentAxis = us-gaap_ConsumerLoanMember
Maturity schedule by major category of loans, After One Year Within Five Years | 14,487 fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear / us-gaap_FinancialInstrumentAxis = us-gaap_ConsumerLoanMember
Maturity schedule by major category of loans, After Five Years | 4,305 fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears / us-gaap_FinancialInstrumentAxis = us-gaap_ConsumerLoanMember
Industrial Development Bonds [Member] |
Accounts, Notes, Loans and Financing Receivable [Line Items] |
Maturity schedule by major category of loans, Within One Year | 2,498 fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember
Maturity schedule by major category of loans, After One Year Within Five Years | 127 fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember
Maturity schedule by major category of loans, After Five Years | $ 2,048 fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears / us-gaap_FinancialInstrumentAxis = fmao_IndustrialDevelopmentBondsMember

X
- Definition Maturity schedule by major category of loans after five years. + References No definition available. + Details
Name: | fmao_MaturityScheduleByMajorCategoryOfLoansAfterFiveYears
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maturity schedule by major category of loans after one year. + References No definition available. + Details
Name: | fmao_MaturityScheduleByMajorCategoryOfLoansAfterOneYear
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Maturity schedule by major category of loans within one year. + References No definition available. + Details
Name: | fmao_MaturityScheduleByMajorCategoryOfLoansWithinOneYear
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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

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_ConsumerRealEstateMember
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: |

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