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]
Revenue	$ 39,230	$ 35,259
Cost of revenue	23,093	21,375
Gross profit	16,137	13,884
Operating expenses:
Selling, general and administrative	9,235	7,934
Research and development	5,596	5,972
Amortization of intangibles	51	51
Total operating expenses	14,882	13,957
Income (loss) from operations	1,255	(73)
Interest expense, net	(26)	(36)
Amortization of debt discount and prepaid debt costs	(11)	(55)
Gain on embedded derivatives		1,086
Income from operations before income taxes	1,218	922
Income tax provision	714	726
Net income	$ 504	$ 196
Net income per share:
Basic	$ 0.02	$ 0.01
Diluted	$ 0.02	$ 0.01
Weighted average common shares outstanding:
Basic	28,122	27,285
Diluted	28,559	28,112