Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 30, 2012	Mar. 31, 2011
Revenue:
Product	$ 41,411	$ 35,953
Service	22,928	31,346
Total revenue	64,339	67,299
Cost of revenue:
Product	9,193	23,161
Service	13,392	17,513
Total cost of revenue	22,585	40,674
Gross profit	41,754	26,625
Operating expenses:
Research and development	18,387	15,608
Sales and marketing	20,585	14,297
General and administrative	8,979	8,196
Total operating expenses	47,951	38,101
Loss from operations	(6,197)	(11,476)
Interest income, net	215	435
Loss before income taxes	(5,982)	(11,041)
Income tax provision	(456)	(1,367)
Net loss	$ (6,438)	$ (12,408)
Loss per share:
Basic (in dollars per share)	$ (0.02)	$ (0.04)
Diluted (in dollars per share)	$ (0.02)	$ (0.04)
Shares used to compute loss per share:
Basic (in shares)	279,487	277,712
Diluted (in shares)	279,487	277,712