Future minimum rental payments under non-cancelable leases (Details) (Operating Leases) (USD $) In Thousands, unless otherwise specified	Jun. 29, 2014
Future minimum rental payments under non-cancelable leases
Future minimum rental payments under non-cancelable leases in 2015	$ 1,669
Future minimum rental payments under non-cancelable leases in 2016	1,609
Future minimum rental payments under non-cancelable leases in 2017	1,228
Future minimum rental payments under non-cancelable leases in 2018	849
Future minimum rental payments under non-cancelable leases in 2019	799
Future minimum rental payments under non-cancelable leases Thereafter	2,144
Future minimum rental payments under non-cancelable leases,	$ 8,298