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Document and Entity Information	3 Months Ended
	Sep. 26, 2013	Oct. 24, 2013 Class A Common Stock [Member]	Oct. 24, 2013 Common Stock [Member]
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 26, 2013
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1
Trading Symbol	JBSS
Entity Registrant Name	SANFILIPPO JOHN B & SON INC
Entity Central Index Key	0000880117
Current Fiscal Year End Date	--06-26
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		2,597,426	8,337,009

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