Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011	Jan. 02, 2010
Revenue	$ 318,366	$ 297,768	$ 194,420
Costs and expenses:
Cost of products sold	129,769	117,943	90,077
Research and development	71,855	60,326	56,133
Selling, general and administrative	68,838	64,359	52,545
Acquisition related charges	536	0	228
Restructuring charges	6,079	11	3,689
Costs and Expenses	277,077	242,639	202,672
Income (loss) from operations	41,289	55,129	(8,252)
Other income, net	1,434	2,474	1,812
Income (loss) before income taxes	42,723	57,603	(6,440)
Benefit (provision) for income taxes	35,509	(531)	(517)
Net income (loss)	$ 78,232	$ 57,072	$ (6,957)
Net income per share:
Basic net income (loss) per share	$ 0.66	$ 0.49	$ (0.06)
Diluted net income (loss) per share	$ 0.65	$ 0.48	$ (0.06)
Shares used in per share calculations:
Basic	117,875	116,726	115,384
Diluted	121,139	120,143	115,384