Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements Of Operations [Abstract]
Revenues	$ 11,558	$ 17,088	$ 35,841	$ 47,297
Cost of revenues	6,477	9,621	19,996	25,716
Gross margin	5,081	7,467	15,845	21,581
Research and development expenses	2,129	1,838	6,108	5,603
Selling, general and administrative expenses	3,324	3,542	9,919	10,870
Restructuring and severance costs	217		217
Amortization of intangibles		18		108
Income (loss) from operations	(589)	2,069	(399)	5,000
Interest income and other	94	18	53	97
Income (loss) before income taxes	(495)	2,087	(346)	5,097
Income tax provision (benefit)	(48)	521	(134)	1,287
Net income (loss)	$ (447)	$ 1,566	$ (212)	$ 3,810
Net income (loss) per share - Basic	$ (0.06)	$ 0.23	$ (0.03)	$ 0.55
Net income (loss) per share - Diluted	$ (0.06)	$ 0.22	$ (0.03)	$ 0.55
Weighted average shares outstanding - Basic	6,951	6,914	6,940	6,900
Weighted average shares outstanding - Diluted	6,951	6,962	6,940	6,948