Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Apr. 02, 2011
Revenue	$ 71,700	$ 82,615
Costs and expenses:
Cost of products sold	32,215	33,006
Research and development	19,146	20,140
Selling, general and administrative	17,923	17,170
Acquisition related charges	1,707	0
Restructuring charges	556	1,835
Costs and Expenses	71,547	72,151
Income from operations	153	10,464
Other income, net	64	663
Income before income taxes	217	11,127
Provision for income taxes	7,931	208
Net (loss) income	(7,714)	10,919
Net (loss) income per share:
Basic	$ (0.07)	$ 0.09
Diluted	$ (0.07)	$ 0.09
Shares used in per share calculations:
Basic	118,174	117,996
Diluted	118,174	121,864
Comprehensive (Loss) income
Net (loss) income	(7,714)	10,919
Other comprehensive income:
Unrealized (loss) gain related to marketable securities, net	(65)	9
Reclassification adjustment for gains on the sale of marketable securities included in net income	0	(133)
Translation adjustment	155	75
Comprehensive (loss) income	$ (7,624)	$ 10,870