DEBT AND LINES OF CREDIT (Details) (USD $) In Thousands, unless otherwise specified	Sep. 29, 2012	Dec. 31, 2011
Debts and Lines of credit
Total short-term borrowings	$ 6,844	$ 19,157
Japanese revolving lines of credit
Debts and Lines of credit
Total short-term borrowings	5,776	5,539
Japanese receivables financing facilities
Debts and Lines of credit
Total short-term borrowings	1,068	1,262
Convertible notes
Debts and Lines of credit
Total short-term borrowings		$ 12,356