CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net revenues	$ 153,580	$ 135,079
Cost of net revenues	40,731	34,319
Gross profit	112,849	100,760
Operating expenses:
Sales and marketing	42,281	38,717
General and administrative	30,348	23,511
Research and development	11,282	10,526
Impairment of goodwill	40,693	0
Asset Impairment Charges	26,320	0
Total operating expenses	150,924	72,754
Profit from operations	(38,075)	28,006
Interest and other income (expense), net	(988)	(812)
Net profit before provision for income taxes	(39,063)	27,194
Provision for income taxes	2,920	6,210
Net profit (loss)	$ (41,983)	$ 20,984
Net profit (loss) per share:
Basic (in usd per share)	$ (0.52)	$ 0.26
Diluted (in usd per share)	$ (0.52)	$ 0.26
Shares used in computing net profit (loss) per share:
Basic (in shares)	81,248	79,235
Diluted (in shares)	81,248	81,856
Effective Income Tax Rate, Continuing Operations	(7.50%)	22.80%