Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jul. 02, 2011	Jul. 03, 2010	Jul. 02, 2011	Jul. 03, 2010
Net revenues:
Systems and components	$ 25,734	$ 63,967	$ 41,225	$ 92,878
Technology development	1,851	4,631	3,783	8,862
Total net revenues	27,585	68,598	45,008	101,740
Cost of net revenues:
Systems and components	16,440	36,425	26,053	52,327
Technology development	1,008	3,139	2,437	5,901
Total cost of net revenues	17,448	39,564	28,490	58,228
Gross profit	10,137	29,034	16,518	43,512
Operating expenses:
Research and development	8,290	7,011	17,302	13,555
Selling, general and administrative	6,508	7,558	13,394	14,125
Total operating expenses	14,798	14,569	30,696	27,680
Income (loss) from operations	(4,661)	14,465	(14,178)	15,832
Interest income and other, net	169	72	298	463
Income (loss) before income taxes	(4,492)	14,537	(13,880)	16,295
Provision for (benefit from) income taxes	(1,873)	2,200	(4,230)	2,528
Net income (loss)	$ (2,619)	$ 12,337	$ (9,650)	$ 13,767
Net income (loss) per share:
Basic	$ (0.11)	$ 0.55	$ (0.42)	$ 0.62
Diluted	$ (0.11)	$ 0.54	$ (0.42)	$ 0.60
Weighted average common shares outstanding:
Basic	22,851	22,286	22,789	22,241
Diluted	22,851	22,931	22,789	22,953