Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net revenue	$ 120,773	$ 105,743	$ 352,501	$ 317,966
Operating expenses:
Cost of revenue	39,459	31,568	112,859	93,905
Research and development	26,550	16,676	76,878	54,128
Selling, general and administrative	45,353	35,788	124,701	121,318
Total operating expenses	111,362	84,032	314,438	269,351
Income from operations	9,411	21,711	38,063	48,615
Legal settlement	0	0	17,984	0
Other income	578	483	1,450	55
Income before income taxes	9,989	22,194	57,497	48,670
Benefit (provision) for income taxes	62,625	(989)	50,798	(2,607)
Net income	$ 72,614	$ 21,205	$ 108,295	$ 46,063
Basic earnings per common share	$ 1.36	$ 0.40	$ 2.03	$ 0.87
Diluted earnings per common share	$ 1.34	$ 0.40	$ 2.00	$ 0.87
Weighted average number of common shares outstanding:
Basic	53,534	52,991	53,414	52,773
Diluted	54,260	53,359	54,242	53,005