XML 32 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information
 3 Months Ended
Sep. 27, 2012
Oct. 29, 2012
Class A Common Stock [Member]
Oct. 29, 2012
Common Stock [Member]
Entity Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Sep. 27, 2012    
Document Fiscal Year Focus 2013    
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 --06-27    
Entity Filer Category Accelerated Filer    
Entity Common Stock, Shares Outstanding   2,597,426 8,167,805