Condensed Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue	$ 78,335	$ 65,347	$ 206,832	$ 174,531
Cost of revenue	35,872	30,053	95,173	80,924
Gross profit	42,463	35,294	111,659	93,607
Research and development	14,679	12,643	43,649	37,246
Selling, general and administrative	17,006	13,891	49,968	40,941
Litigation expense (benefit), net	332	104	(8,093)	(455)
Total operating expenses	32,017	26,638	85,524	77,732
Income from operations	10,446	8,656	26,135	15,875
Interest and other income (expense), net	202	(59)	686	149
Income before income taxes	10,648	8,597	26,821	16,024
Income tax provision (benefit)	(573)	1,187	186	625
Net income	$ 11,221	$ 7,410	$ 26,635	$ 15,399
Net income per share:
Basic (in Dollars per share)	$ 0.29	$ 0.20	$ 0.69	$ 0.42
Diluted (in Dollars per share)	$ 0.28	$ 0.19	$ 0.67	$ 0.40
Weighted-average shares outstanding:
Basic (in Shares)	38,785	37,910	38,646	37,079
Diluted (in Shares)	39,727	39,009	39,618	38,419
Cash dividends declared per common share (in Dollars per share)	$ 0.15		$ 0.30