Condensed Consolidated Statements of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended	9 Months Ended
Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Income Statement [Abstract]
Net revenues	$ 92,673	$ 71,017	$ 269,718	$ 273,613
Cost of net revenues	72,290	56,371	213,463	214,728
Gross profit	20,383	14,646	56,255	58,885
Operating costs and expenses:
Research and development	12,438	14,696	39,267	44,982
Sales and marketing	5,129	6,267	16,739	21,255
General and administrative	5,128	4,825	19,209	16,061
Goodwill and intangible assets impairment	0	20,484	0	49,821
Amortization of purchased intangible assets	141	227	422	891
Restructuring charges	2,411	0	2,411	0
Total operating costs and expenses	25,247	46,499	78,048	133,010
Operating loss	(4,864)	(31,853)	(21,793)	(74,125)
Other income (expense):
Interest income, net	31	72	109	238
Other income (expense), net	59	(45)	(83)	(191)
Loss before income taxes	(4,774)	(31,826)	(21,767)	(74,078)
Income tax provision	319	107	340	276
Net loss	$ (5,093)	$ (31,933)	$ (22,107)	$ (74,354)
Net loss per share:
Basic and diluted	$ (0.15)	$ (0.97)	$ (0.65)	$ (2.28)
Weighted average shares used in computation of basic and diluted net loss per share:
Basic and diluted	34,070	33,074	33,902	32,683

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

Name:	us-gaap_AmortizationOfIntangibleAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration