Weighted average assumptions (Details)	12 Months Ended
Jun. 30, 2013	Jun. 24, 2012
Weighted average assumptions
Expected life (in years)	6.0	5.8
Expected volatility	48.90%	46.20%
Risk-free interest rate	1.10%	1.30%
Expected forfeiture rate	61.80%	17.30%

Expected forfeiture rate assumption used in valuing an instrument.

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- Definition

Expected life (in years) assumption used in valuing an instrument.

+ References

No definition available.

+ Details

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- Details

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

+ References

+ Details

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