Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements Of Operations [Abstract]
Revenues	$ 6,713	$ 11,280
Cost of revenues	3,774	6,045
Gross margin	2,939	5,235
Research and development expenses	1,836	1,917
Selling, general and administrative expenses	3,127	3,226
Income (loss) from operations	(2,024)	92
Interest income and other	(104)	35
Income (loss) before income taxes	(2,128)	127
Income tax provision	18	35
Net income (loss)	$ (2,146)	$ 92
Net income (loss) per share - Basic	$ (0.31)	$ 0.01
Net income (loss) per share - Diluted	$ (0.31)	$ 0.01
Weighted average shares outstanding - Basic	6,961	6,933
Weighted average shares outstanding - Diluted	6,961	6,982