Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Net revenue	$ 1,300,695	$ 1,393,515	$ 1,369,633
Cost of revenue	933,016	995,597	976,018
Gross profit	367,679	397,918	393,615
Operating expenses:
Research and development	86,499	90,902	85,168
Sales and marketing	146,794	157,017	153,804
General and administrative	45,313	46,552	48,915
Restructuring and other charges	6,398	2,209	5,335
Litigation reserves, net	(2,682)	(1,011)	5,354
Goodwill impairment charges	0	74,196	0
Intangibles Impairment charges	0	0	2,000
Total operating expenses	282,322	369,865	300,576
Income from operations	85,357	28,053	93,039
Interest income	295	253	400
Other income (expense), net	(88)	2,455	(457)
Income before income taxes	85,564	30,761	92,982
Provision for income taxes	36,980	21,973	37,765
Net Income	$ 48,584	$ 8,788	$ 55,217
Net income per share:
Basic net income per share (in dollars per share)	$ 1.47	$ 0.25	$ 1.44
Diluted net income per share (in dollars per share)	$ 1.44	$ 0.24	$ 1.42
Weighted average shares outstanding used to compute net income per share:
Basic (in shares)	33,161	35,771	38,379
Diluted (in shares)	33,788	36,445	38,948