XML 17 R28.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Loans (Details 7) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2012 Contracts | Sep. 30, 2011 Contracts | Sep. 30, 2012 Contracts | Sep. 30, 2011 Contracts
Commercial real estate [Member] |  |  |  |
Impaired loans classified as troubled debt restructured |  |  |  |
Number of Contracts Modified |  |  | 1 | 2
Pre-Modification Outstanding Recorded Investment |  |  | $ 1,937 | $ 923
Post-Modification Outstanding Recorded Investment |  |  | 1,937 | 688
Number of Contracts |  | 1 |  | 1
Recorded Investment |  |  |  | 207
Ag Real Estate [Member] |  |  |  |
Impaired loans classified as troubled debt restructured |  |  |  |
Number of Contracts Modified |  |  |  |
Pre-Modification Outstanding Recorded Investment |  |  |  |
Post-Modification Outstanding Recorded Investment |  |  |  |
Number of Contracts |  |  |  |
Recorded Investment |  |  |  |
Commercial and industrial [Member] |  |  |  |
Impaired loans classified as troubled debt restructured |  |  |  |
Number of Contracts Modified | 2 |  | 2 |
Pre-Modification Outstanding Recorded Investment | 420 |  | 420 |
Post-Modification Outstanding Recorded Investment | 420 |  | 420 |
Number of Contracts |  |  |  |
Recorded Investment |  |  |  |

X
- Definition Financing receivable modifications number of contracts 1. + References No definition available. + Details
Name: | fmao_FinancingReceivableModificationsNumberOfContractsOne
Namespace Prefix: | fmao_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing receivable modifications post modification recorded investment 1. + References No definition available. + Details
Name: | fmao_FinancingReceivableModificationsPostModificationRecordedInvestmentOne
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable modifications premodification recorded investment 1. + References No definition available. + Details
Name: | fmao_FinancingReceivableModificationsPremodificationRecordedInvestmentOne
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Financing receivable modifications subsequent default number of contracts during the period. + References No definition available. + Details
Name: | fmao_FinancingReceivableModificationsSubsequentDefaultNumberOfContractsDuringPeriod
Namespace Prefix: | fmao_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Financing receivable modifications subsequent default recorded investment during period. + References No definition available. + Details
Name: | fmao_FinancingReceivableModificationsSubsequentDefaultRecordedInvestmentDuringPeriod
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | fmao_ImpairedLoansClassifiedAsTroubledDebtRestructuredAbstract
Namespace Prefix: | fmao_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration