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Sale of Real Property - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Dec. 26, 2013
Gain (Loss) on Disposition of Property Plant Equipment [Abstract] |
Proceeds from sale of land and building | $ 8,000 us-gaap_ProceedsFromSaleOfLandHeldForUse
Gain on sale of land and building | 1,037 jbss_GainLossOnSaleOfLand
Income tax expense of sale of land and building | $ 604 jbss_IncomeTaxImpactOfSaleOfAssetsHeldForSale

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- Definition Gain Loss On Sale Of Land + References No definition available. + Details
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Namespace Prefix: | jbss_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Income tax impact of sale of assets held for sale. + References No definition available. + Details
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Namespace Prefix: | jbss_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The cash inflow from the sale of land held for use; excludes sales of land held as inventory or investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration