DEBT AND LINES OF CREDIT (Details 2) (USD $) In Thousands, unless otherwise specified	Mar. 30, 2013	Dec. 29, 2012
Debt and Lines of credit
Total long-term debt	$ 165,780	$ 178,097
Current portion of long-term debt	29,610	27,339
Total long-term debt, less current portion	136,170	150,758
U.S. term loan, maturing October 2016
Debt and Lines of credit
Total long-term debt	159,563	171,125
Israeli loans, maturing through October 2015
Debt and Lines of credit
Total long-term debt	3,230	3,591
Japanese private placement bonds due June 2014
Debt and Lines of credit
Total long-term debt	2,122	2,325
Japanese loans due through November 2016
Debt and Lines of credit
Total long-term debt	$ 865	$ 1,056