Fair Value (Narrative) (Details) (Municipal bonds, Level 2)	Sep. 30, 2012 issuer security
Municipal bonds \| Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Number of securities not priced by primary provider	10
Number of issuers	5

Number of Issuers of Securities Not Priced by the Primary Provider

No definition available.

Name:	fmfc_NumberOfIssuersOfSecuritiesNotPricedByPrimaryProvider
Namespace Prefix:	fmfc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant