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Significant Accounting Policies - Amortization of Introductory Funds Recorded as Reduction in Net Sales (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Jun. 27, 2013 | Jun. 28, 2012 | Jun. 30, 2011
Amortization Of Introductory Funds [Abstract] |  |  |
Amortization of introductory funds | $ 246 | $ 82 | $ 41

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- Definition Amortization Expense Reduction In Net Sales + References No definition available. + Details
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Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: | jbss_
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Balance Type: | na
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