CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 29, 2012	Sep. 24, 2011	Sep. 29, 2012	Sep. 24, 2011
Net sales	$ 57,748	$ 71,813	$ 170,448	$ 242,409
Cost and expenses:
Cost of sales	39,622	48,458	119,119	163,692
Research and development	9,136	8,824	26,194	27,191
Selling, general and administrative	11,597	11,871	33,514	35,395
Total cost and expenses	60,355	69,153	178,827	226,278
Income (loss) from operations	(2,607)	2,660	(8,379)	16,131
Interest and other, net	739	114	920	340
Income (loss) before income taxes	(1,868)	2,774	(7,459)	16,471
Income tax provision (benefit)	(119)	(602)	(377)	1,471
Net income (loss)	$ (1,749)	$ 3,376	$ (7,082)	$ 15,000
Income (loss) per share:
Basic	$ (0.07)	$ 0.14	$ (0.29)	$ 0.62
Diluted	$ (0.07)	$ 0.14	$ (0.29)	$ 0.61
Weighted average shares used in computing income (loss) per share:
Basic	24,479	24,158	24,421	24,093
Diluted	24,479	24,478	24,421	24,481
Cash dividends declared per share	$ 0.06	$ 0.06	$ 0.18	$ 0.18