XML 37 R1.htm IDEA: XBRL DOCUMENT v2.4.0.6
Document and Entity Information
 6 Months Ended
Dec. 27, 2012
Jan. 28, 2013
Class A Common Stock [Member]
Jan. 28, 2013
Common Stock [Member]
Entity Information [Line Items]      
Document Type 10-Q    
Amendment Flag false    
Document Period End Date Dec. 27, 2012    
Document Fiscal Year Focus 2013    
Document Fiscal Period Focus Q2    
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 8,255,180