XML 105 R95.htm IDEA: XBRL DOCUMENT v2.4.1.9

Condensed Financial Statements of Parent Company - Statement of Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income
Interest									$ 28,070us-gaap_InterestAndFeeIncomeLoansAndLeases	$ 24,978us-gaap_InterestAndFeeIncomeLoansAndLeases	$ 26,489us-gaap_InterestAndFeeIncomeLoansAndLeases
Interest Municipals									2,037us-gaap_InterestIncomeSecuritiesStateAndMunicipal	2,080us-gaap_InterestIncomeSecuritiesStateAndMunicipal	2,112us-gaap_InterestIncomeSecuritiesStateAndMunicipal
Total interest income	8,519us-gaap_InterestAndDividendIncomeOperating	8,471us-gaap_InterestAndDividendIncomeOperating	8,304us-gaap_InterestAndDividendIncomeOperating	8,159us-gaap_InterestAndDividendIncomeOperating	8,117us-gaap_InterestAndDividendIncomeOperating	7,844us-gaap_InterestAndDividendIncomeOperating	7,765us-gaap_InterestAndDividendIncomeOperating	7,702us-gaap_InterestAndDividendIncomeOperating	33,453us-gaap_InterestAndDividendIncomeOperating	31,428us-gaap_InterestAndDividendIncomeOperating	33,273us-gaap_InterestAndDividendIncomeOperating
Income Before Income Taxes and Equity in Undistributed Earnings of Subsidiaries	3,775us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	3,476us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	3,434us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2,832us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	3,151us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	2,857us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	3,511us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	3,084us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	13,517us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	12,603us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	13,692us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Income Taxes	1,114us-gaap_IncomeTaxExpenseBenefit	1,002us-gaap_IncomeTaxExpenseBenefit	881us-gaap_IncomeTaxExpenseBenefit	874us-gaap_IncomeTaxExpenseBenefit	864us-gaap_IncomeTaxExpenseBenefit	791us-gaap_IncomeTaxExpenseBenefit	1,009us-gaap_IncomeTaxExpenseBenefit	932us-gaap_IncomeTaxExpenseBenefit	3,871us-gaap_IncomeTaxExpenseBenefit	3,596us-gaap_IncomeTaxExpenseBenefit	3,904us-gaap_IncomeTaxExpenseBenefit
Net Income	2,661us-gaap_NetIncomeLoss	2,474us-gaap_NetIncomeLoss	2,553us-gaap_NetIncomeLoss	1,958us-gaap_NetIncomeLoss	2,287us-gaap_NetIncomeLoss	2,066us-gaap_NetIncomeLoss	2,502us-gaap_NetIncomeLoss	2,152us-gaap_NetIncomeLoss	9,646us-gaap_NetIncomeLoss	9,007us-gaap_NetIncomeLoss	9,788us-gaap_NetIncomeLoss
Other Comprehensive Loss:
Unrealized gains (losses) on securities									1,158us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	(8,448)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	417us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Comprehensive Income									10,084us-gaap_ComprehensiveIncomeNetOfTax	2,920us-gaap_ComprehensiveIncomeNetOfTax	9,500us-gaap_ComprehensiveIncomeNetOfTax
Farmers & Merchants State Bank [Member]
Income
Dividends from subsidiary									5,725fmb_DividendIncomeOperatingFromBankSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	3,830fmb_DividendIncomeOperatingFromBankSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	3,870fmb_DividendIncomeOperatingFromBankSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Interest										566us-gaap_InterestAndFeeIncomeLoansAndLeases / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	713us-gaap_InterestAndFeeIncomeLoansAndLeases / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Interest Municipals									215us-gaap_InterestIncomeSecuritiesStateAndMunicipal / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	30us-gaap_InterestIncomeSecuritiesStateAndMunicipal / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Total interest income									5,940us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,426us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,583us-gaap_InterestAndDividendIncomeOperating / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Operating Expenses									577us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	304us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	305us-gaap_OperatingExpenses / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income Before Income Taxes and Equity in Undistributed Earnings of Subsidiaries									5,363us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,122us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,278us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income Taxes									(196)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	89us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	139us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Income from operation before equity in undistributed earnings of subsidiary									5,559fmb_IncomeFromOperationBeforeEquityInUndistributedEarningsOfSubsidiary / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,033fmb_IncomeFromOperationBeforeEquityInUndistributedEarningsOfSubsidiary / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,139fmb_IncomeFromOperationBeforeEquityInUndistributedEarningsOfSubsidiary / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Equity in undistributed earnings of Subsidiaries									4,087fmb_EquityInUndistributedEarningsDistributionsInExcessOfEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	4,974fmb_EquityInUndistributedEarningsDistributionsInExcessOfEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	5,649fmb_EquityInUndistributedEarningsDistributionsInExcessOfEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Net Income									9,646us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	9,007us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	9,788us-gaap_NetIncomeLoss / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Other Comprehensive Loss:
Unrealized gains (losses) on securities									438us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(6,087)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	(288)us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Comprehensive Income									$ 10,084us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	$ 2,920us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember	$ 9,500us-gaap_ComprehensiveIncomeNetOfTax / dei_LegalEntityAxis = us-gaap_ParentCompanyMember

X

- Definition

Dividend Income Operating From Bank Subsidiaries

+ References

No definition available.

+ Details

Name:	fmb_DividendIncomeOperatingFromBankSubsidiaries
Namespace Prefix:	fmb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Equity in undistributed earnings (distributions in excess of earnings).

+ References

No definition available.

+ Details

Name:	fmb_EquityInUndistributedEarningsDistributionsInExcessOfEarnings
Namespace Prefix:	fmb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Income From Operation Before Equity In Undistributed Earnings Of Subsidiary

+ References

No definition available.

+ Details

Name:	fmb_IncomeFromOperationBeforeEquityInUndistributedEarningsOfSubsidiary
Namespace Prefix:	fmb_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Other Comprehensive Income

-URI http://asc.fasb.org/extlink&oid=6519514



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Comprehensive Income

-URI http://asc.fasb.org/extlink&oid=35737396



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 5

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e557-108580



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Net Income

-URI http://asc.fasb.org/extlink&oid=6518256

+ Details

Name:	us-gaap_ComprehensiveIncomeNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h)(1)(i))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

+ Details

Name:	us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 235

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.4-08.(h))

-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Article 4



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Income Tax Expense (or Benefit)

-URI http://asc.fasb.org/extlink&oid=6515339



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 9

-Subparagraph (a),(b)

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32639-109319

+ Details

Name:	us-gaap_IncomeTaxExpenseBenefit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.1-5)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 1, 2 , 3, 4, 5

-Article 9

+ Details

Name:	us-gaap_InterestAndDividendIncomeOperating
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_InterestAndDividendIncomeOperatingAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The aggregate interest and fee income generated by: (1) loans the Entity has positive intent and ability to hold for the foreseeable future, or until maturity or payoff, including commercial and consumer loans, whether domestic or foreign, which may consist of: (a) industrial and agricultural; (b) real estate; and (c) real estate construction loans; (d) trade financing; (e) lease financing; (f) home equity lines-of-credit; (g) automobile and other vehicle loans; and (h) credit card and other revolving-type loans and (2) loans and leases held-for-sale which may include mortgage loans, direct financing, and sales-type leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.1)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 1

-Article 9

+ Details

Name:	us-gaap_InterestAndFeeIncomeLoansAndLeases
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Interest income, including any amortization and accretion (as applicable) of discounts and premiums, derived from debt securities issued by municipal governments, local taxing districts and US state government agencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-04.2)

-URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 2

-Article 9

+ Details

Name:	us-gaap_InterestIncomeSecuritiesStateAndMunicipal
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 260

-SubTopic 10

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Other Comprehensive Income

-URI http://asc.fasb.org/extlink&oid=6519514



Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Net Income

-URI http://asc.fasb.org/extlink&oid=6518256



Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.19)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913



Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.18)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688



Reference 7: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 225

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-04.22)

-URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913



Reference 8: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 19

-Article 5



Reference 9: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Paragraph 20

-Article 9

+ Details

Name:	us-gaap_NetIncomeLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

+ References

No definition available.

+ Details

Name:	us-gaap_OperatingExpenses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

Name:	us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 11

-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 220

-SubTopic 10

-Section 45

-Paragraph 10A

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580

+ Details

Name:	us-gaap_OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	dei_LegalEntityAxis=us-gaap_ParentCompanyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: