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Basis of Presentation and Description of Business - Additional Information (Detail)	3 Months Ended
	Sep. 26, 2013
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of weeks in fiscal year	364 days
Number of weeks in quarter	91 days

X

- Definition

Number of weeks in fiscal year.

+ References

No definition available.

+ Details

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X

- Definition

Number Of Weeks In Quarter

+ References

No definition available.

+ Details

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Namespace Prefix:	jbss_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Details

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