Document and Entity Information	9 Months Ended
	Sep. 30, 2011	Nov. 14, 2011
Document And Entity Information
Entity Registrant Name	F&M BANK CORP
Entity Central Index Key	0000740806
Document Type	10-Q
Document Period End Date	Sep. 30, 2011
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		2,490,895
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2011