XML 63 R56.htm IDEA: XBRL DOCUMENT
v3.24.2.u1

Servicing - Additional Information (Details) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 USD ($) Loan Strata | Jun. 30, 2023 USD ($) | Dec. 31, 2023 USD ($) Loan Strata
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Valuation Allowance | $ 7 |  | $ 7
1-4 Family Real Estate Loans [Member] |  |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Loans serviced for others unpaid principal amount | 363,400 | $ 366,900 | 367,800
Capitalized service right assets included in other assets | 3,500 |  | 3,500
Fair value of the capitalized servicing rights | $ 5,300 | $ 5,600 | $ 5,500
Prepayment rate | 6.10% | 5.70% | 6.30%
Number of strata which included loan | Strata | 2 |  |
Number of loans | Loan | 3,694 |  |
Discount yield | 6.11% |  |
Valuation Allowance | $ 2 |  |
Agricultural Real Estate Loans [Member] |  |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Loans serviced for others unpaid principal amount | 138,500 | $ 137,200 | $ 135,800
Capitalized service right assets included in other assets | 2,000 |  | 2,200
Fair value of the capitalized servicing rights | $ 2,600 | $ 2,300 | $ 2,200
Number of strata which included loan | Strata |  |  | 11
Number of loans | Loan |  |  | 588
Discount yield |  |  | 9.17%
Valuation Allowance |  |  | $ 5
Two 1-4 Family Real Estate Strata [Member] |  |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Number of loans | Loan | 91 |  |
Eleven Agricultural Real Estate Strata [Member] |  |  |
Customer Securities for which Entity has Right to Sell or Repledge (Including Securities Sold or Repledged) [Line Items] |  |  |
Number of loans | Loan |  |  | 38

X
- Definition Capitalized service right assets fair market value. + References No definition available. + Details
Name: | fmao_CapitalizedServiceRightAssetsFairMarketValue
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Capitalized service right assets included in other assets. + References No definition available. + Details
Name: | fmao_CapitalizedServiceRightAssetsIncludedInOtherAssets
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Loans serviced for others unpaid principal amount. + References No definition available. + Details
Name: | fmao_LoansServicedForOthersUnpaidPrincipalAmount
Namespace Prefix: | fmao_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of Loans + References No definition available. + Details
Name: | fmao_NumberOfLoans
Namespace Prefix: | fmao_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of strata which included loan. + References No definition available. + Details
Name: | fmao_NumberOfStrataWhichIncludedLoan
Namespace Prefix: | fmao_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

X
- Definition Amount of increase (decrease) in the amortized amount from a decrease (increase) in the valuation allowance applied to the servicing asset for a contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a)(5) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-4 + Details
Name: | us-gaap_ServicingAssetAtAmortizedValueValuationAllowance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Discount rate used to estimate the fair value of servicing assets and servicing liabilities. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-2 + Details
Name: | us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValueDiscountRate
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimated rate of prepayments of principal on servicing assets and servicing liabilities. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 860 -SubTopic 50 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481229/860-50-50-2 + Details
Name: | us-gaap_ServicingAssetsAndServicingLiabilitiesAtFairValueAssumptionsUsedToEstimateFairValuePrepaymentSpeed
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeAxis=fmao_OneToFourFamilyRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeAxis=fmao_AgriculturalRealEstateLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeAxis=fmao_TwoOneToFourFamilyRealEstateStrataMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_CustomerSecuritiesForWhichEntityHasRightToSellOrRepledgeAxis=fmao_ElevenAgriculturalRealEstateStrataMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |