Condensed Consolidated Statements of Operations (in thousands, except per share amounts) (Unaudited) (USD $) In Thousands, except Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Revenue	$ 52,962	$ 65,843	$ 149,058	$ 171,783
Cost of revenue	25,148	29,857	72,381	74,067
Gross profit	27,814	35,986	76,677	97,716
Operating expenses:
Research and development	11,792	11,291	33,115	34,116
Selling, general and administrative	10,249	10,296	30,082	32,304
Litigation expense	722	964	2,474	4,759
Total operating expenses	22,763	22,551	65,671	71,179
Income from operations	5,051	13,435	11,006	26,537
Other income (expense):
Interest and other income	103	240	534	925
Interest and other expense	(100)	(159)	(324)	(163)
Total other income, net	3	81	210	762
Income before income taxes	5,054	13,516	11,216	27,299
Income tax provision / (benefit)	(419)	297	368	1,317
Net income	$ 5,473	$ 13,219	$ 10,848	$ 25,982
Basic net income per share (in Dollars per share)	$ 0.16	$ 0.37	$ 0.32	$ 0.72
Diluted net income per share (in Dollars per share)	$ 0.16	$ 0.35	$ 0.31	$ 0.68
Weighted average common shares outstanding:
Basic (in Shares)	33,594	36,185	34,149	35,968
Diluted (in Shares)	34,240	37,727	35,275	38,130