Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012		Mar. 31, 2011
Revenue	$ 50,484		$ 44,468
Cost of revenue (1)	24,074	[1]	22,163	[1]
Gross profit	26,410		22,305
Operating expenses:
Research and development (2)	11,118	[1]	10,086	[1]
Selling, general and administrative (3)	11,966	[1]	9,490	[1]
Litigation expense	128		813
Total operating expenses	23,212		20,389
Income from operations	3,198		1,916
Other income (expense):
Interest and other income	157		271
Interest and other expense	(51)		(88)
Total other income, net	106		183
Income before income taxes	3,304		2,099
Income tax provision	309		206
Net income	$ 2,995		$ 1,893
Basic net income per share (in Dollars per share)	$ 0.09		$ 0.05
Diluted net income per share (in Dollars per share)	$ 0.08		$ 0.05
Weighted average common shares outstanding:
Basic (in Shares)	34,105		35,024
Diluted (in Shares)	35,538		36,105

[1] Includes stock-based compensation expense