DEBT AND LINES OF CREDIT (Details) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Debts and Lines of credit
Total short-term borrowings	$ 5,858	$ 5,646
Japanese revolving lines of credit
Debts and Lines of credit
Total short-term borrowings	5,307	5,231
Japanese receivables financing facilities
Debts and Lines of credit
Total short-term borrowings	$ 551	$ 415