INTANGIBLE ASSETS (Details 2) (USD $)	3 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
Intangible assets, excluding goodwill
Amortization expense related to intangible assets	$ 2,600,000	$ 5,200,000
Estimated aggregate amortization expense
2013 (remaining)	7,751,000
2014	8,344,000
2015	6,712,000
2016	6,337,000
2017	5,371,000
Thereafter	19,863,000
Total estimated future amortization expense	54,378,000
Future IPR&D expense excluded from estimated future expense	$ 2,000,000