Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Jun. 30, 2012
Schedule of accrued liabilities
Accrued compensation	$ 5,886	$ 5,886
Income taxes payable	1,016	2
Sales commissions	371	497
Accrued construction liabilities	172	845
Other accrued expenses	1,537	1,378
Total accrued liabilities	$ 8,982	$ 8,608