CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
Net revenue	$ 64,713	$ 66,482	$ 197,526	$ 195,300
Cost of revenue	49,218	39,730	145,331	116,848
Gross profit	15,495	26,752	52,195	78,452
Operating expenses:
Sales and marketing	14,343	13,731	47,225	43,906
Research and development	6,402	5,500	19,999	18,542
General and administrative	10,932	11,177	36,053	33,182
Restructuring and other	1,937	0	1,937	0
Goodwill impairment	21,000	0	21,000	0
Total operating expenses	54,614	30,408	126,214	95,630
Loss from operations	(39,119)	(3,656)	(74,019)	(17,178)
Interest expense	(2,495)	(1,272)	(7,356)	(1,376)
Other, net	(372)	179	(282)	(119)
Loss before income taxes	(41,986)	(4,749)	(81,657)	(18,673)
Income tax provision (benefit)	(200)	753	(39)	2,190
Net loss	$ (41,786)	$ (5,502)	$ (81,618)	$ (20,863)
Net loss per share, basic and diluted (in dollars per share)	$ (0.50)	$ (0.07)	$ (0.99)	$ (0.27)
Weighted average common shares outstanding, basic and diluted (in shares)	83,131,000	79,740,000	82,668,000	77,557,000