Document and Entity Information	3 Months Ended
	Dec. 31, 2011	Jan. 31, 2012 Common Stock	Jan. 31, 2012 Class B Common Stock	Jan. 31, 2012 Class C Common Stock	Jan. 31, 2012 Class A non-voting Preferred Stock
Entity Registrant Name	FONAR CORP
Entity Central Index Key	0000355019
Document Type	10-Q
Document Period End Date	Dec. 31, 2011
Amendment Flag	false
Current Fiscal Year End Date	--06-12
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		5,835,428	158	382,513	313,451
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2012