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Distribution Channel and Product Type Sales Mix - Schedule of Sales by Product Type as Percentage of Gross Sales (Detail) | 12 Months Ended
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Jun. 26, 2014 | Jun. 27, 2013 | Jun. 28, 2012
Product Type Reporting Information [Line Items] |  |  |
Total | 100.00% | 100.00% | 100.00%
Peanuts [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Total | 15.10% | 18.20% | 17.60%
Pecans [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Total | 13.60% | 15.90% | 17.90%
Cashews & Mixed Nuts [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Total | 18.70% | 19.40% | 20.30%
Walnuts [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Total | 11.70% | 12.00% | 12.20%
Almonds [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Total | 22.30% | 16.50% | 14.70%
Other [Member] |  |  |
Product Type Reporting Information [Line Items] |  |  |
Total | 18.60% | 18.00% | 17.30%

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- Definition Percentage Of Gross Product Sales + References No definition available. + Details
Name: | jbss_PercentageOfGrossProductSales
Namespace Prefix: | jbss_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | jbss_ProductTypeReportingInformationLineItems
Namespace Prefix: | jbss_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration