Condensed Consolidated Statements Of Operations (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Condensed Consolidated Statements Of Operations
Net revenue	$ 48,512	$ 37,976	$ 94,634	$ 70,152
Cost of revenue	28,229	21,175	54,365	41,946
Gross profit	20,283	16,801	40,269	28,206
Operating expenses
Sales and marketing	11,415	8,340	22,520	15,944
Research and development	3,390	1,490	6,103	2,508
General and administrative	7,870	4,392	15,723	8,362
Total operating expenses	22,675	14,222	44,346	26,814
Income (loss) from operations	(2,392)	2,579	(4,077)	1,392
Interest expense	(51)	(304)	(384)	(615)
Other (expense) income, net	(384)	168	(909)	73
Income (loss) before income taxes	(2,827)	2,443	(5,370)	850
Income tax (benefit) provision	(1,694)	926	(21,653)	1,103
Net income (loss)	$ (1,133)	$ 1,517	$ 16,283	$ (253)
Net income (loss) per common share:
Basic	$ (0.02)	$ 0.03	$ 0.26	$ 0.00
Diluted	$ (0.02)	$ 0.03	$ 0.24	$ 0.00
Weighted-average shares used in computing net income (loss) per common share:
Basic	67,607	57,376	62,714	57,131
Diluted	67,607	58,709	69,205	57,131