Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Condensed Consolidated Statements Of Operations [Abstract]
Revenues	$ 11,280	$ 13,350
Cost of revenues	6,045	6,743
Gross margin	5,235	6,607
Research and development expenses	1,917	1,818
Selling, general and administrative expenses	3,226	3,657
Amortization of intangibles		45
Income from operations	92	1,087
Interest income and other	35	86
Income before income taxes	127	1,173
Income tax provision	35	327
Net income	$ 92	$ 846
Net income per share - Basic	$ 0.01	$ 0.12
Net income per share - Diluted	$ 0.01	$ 0.12
Weighted average shares outstanding - Basic	6,933	6,891
Weighted average shares outstanding - Diluted	6,982	6,935