Weighted average assumptions (Details)	12 Months Ended
	Jun. 29, 2014	Jun. 30, 2013
Weighted average assumptions
Expected life (in years)	6.0	6.0
Expected volatility	42.80%	48.90%
Risk-free interest rate	1.50%	1.10%
Expected forfeiture rate	58.20%	61.80%