CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Net revenues:
Products	$ 125,874	$ 129,488	$ 245,812	$ 266,234
Services	34,405	32,295	66,607	61,301
Less allowances related to divestitures	(2,848)	0	(2,848)	0
Total net revenues	157,431	161,783	309,571	327,535
Cost of revenues:
Products	66,642	64,024	127,850	127,888
Services	14,325	14,706	27,042	28,760
Amortization of intangible assets	644	685	1,294	1,351
Restructuring costs	2,633	0	2,633	0
Total cost of revenues	84,244	79,415	158,819	157,999
Gross profit	73,187	82,368	150,752	169,536
Operating expenses:
Research and development	26,896	30,453	54,377	60,426
Marketing and selling	43,454	45,867	89,380	90,917
General and administrative	13,905	14,219	28,796	29,219
Amortization of intangible assets	1,105	2,161	2,717	4,306
Restructuring costs (recoveries), net	15,841	162	16,009	(1,314)
Loss on sale of assets	9,951	597	9,699	597
Total operating expenses	111,152	93,459	200,978	184,151
Operating loss	(37,965)	(11,091)	(50,226)	(14,615)
Interest income	14	9	115	68
Interest expense	(405)	(594)	(720)	(1,016)
Other income (expense), net	12	(60)	32	3
Loss before income taxes	(38,344)	(11,736)	(50,799)	(15,560)
Provision for (benefit from) income taxes, net	903	(590)	1,426	367
Net loss	$ (39,247)	$ (11,146)	$ (52,225)	$ (15,927)
Net loss per common share - basic and diluted (in dollars per share)	$ (1.01)	$ (0.29)	$ (1.35)	$ (0.42)
Three Months Ended June 30, 2012 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)	38,778		38,778
Three Months Ended June 30, 2011 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)		38,413		38,413
Six Months Ended June 30, 2012 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)	38,720		38,720
Six Months Ended June 30, 2011 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)		38,323		38,323