Document And Entity Information (USD $)	12 Months Ended
	May 29, 2012	Jul. 24, 2012	Dec. 13, 2011
Document And Entity Information [Abstract]
Entity Registrant Name	FRISCHS RESTAURANTS INC
Entity Central Index Key	0000039047
Current Fiscal Year End Date	--05-29
Entity Filer Category	Accelerated Filer
Document Type	10-K
Document Period End Date	May 29, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		4,941,248
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 68,309,000