Document and Entity Information	3 Months Ended
	Sep. 30, 2011	Oct. 31, 2010 Common Stock	Oct. 31, 2010 Class B Common Stock	Oct. 31, 2010 Class C Common Stock	Oct. 31, 2010 Class A non-voting Preferred Stock
Entity Registrant Name	FONAR CORP
Entity Central Index Key	0000355019
Document Type	10-Q
Document Period End Date	Sep. 30, 2011
Amendment Flag	true
Current Fiscal Year End Date	--06-30
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		5,722,728	158	382,513	313,451
Amendment Description	Adding XBRL
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2012