STOCK INCENTIVE PLANS AND STOCK-BASED COMPENSATION (Details 2) (USD $)	12 Months Ended
	Dec. 29, 2012	Dec. 31, 2011	Jan. 01, 2011
Total stock-based compensation expense included in the Company's consolidated statements of operations
Stock-based compensation expense	$ 8,369,000	$ 6,201,000	$ 4,848,000
Forfeitures rate assumed in recognizing compensation expense (as a percent)	12.50%	15.40%	15.40%
Unrecognized total compensation cost
Unrecognized stock-based compensation expense related to non-vested stock-based awards	9,300,000
Estimated forfeitures	2,200,000
Weighted-average period over which unrecognized stock-based compensation cost is expected to be recognized	1 year 4 months 24 days
Cost of sales
Total stock-based compensation expense included in the Company's consolidated statements of operations
Stock-based compensation expense	693,000	488,000	392,000
Selling, general and administrative expenses
Total stock-based compensation expense included in the Company's consolidated statements of operations
Stock-based compensation expense	6,740,000	5,029,000	3,896,000
Research and development expense
Total stock-based compensation expense included in the Company's consolidated statements of operations
Stock-based compensation expense	$ 936,000	$ 684,000	$ 560,000