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Significant Accounting Policies - Schedule of Gross Rental Income and Rental (Expense) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 27, 2013	Jun. 28, 2012	Jun. 30, 2011
Gross Rental Income And Expense [Abstract]
Gross rental income	$ 1,671	$ 1,426	$ 1,458
Rental (expense), net	$ (1,495)	$ (1,450)	$ (1,412)

X

- Details

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Namespace Prefix:	jbss_
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X

- Definition

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

+ References

No definition available.

+ Details

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Balance Type:	debit
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X

- Definition

Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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