CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Net revenues:
Products	$ 89,071	$ 131,655	$ 334,882	$ 397,889
Services	36,297	33,043	102,905	94,343
Recoveries (allowances) related to divestitures	1,807	0	(1,041)	0
Total net revenues	127,175	164,698	436,746	492,232
Cost of revenues:
Products	43,784	60,063	171,633	187,952
Services	15,107	15,586	42,149	44,346
Amortization of intangible assets	634	684	1,928	2,036
Restructuring costs	528	0	3,161	0
Total cost of revenues	60,053	76,333	218,871	234,334
Gross profit	67,122	88,365	217,875	257,898
Operating expenses:
Research and development	23,099	28,960	77,474	89,386
Marketing and selling	36,629	45,395	126,017	136,312
General and administrative	10,542	13,518	39,338	42,737
Amortization of intangible assets	782	2,159	3,499	6,465
Restructuring costs, net	12,674	2,707	28,683	1,392
Gain (loss) on sales of assets	(206)	0	9,493	597
Total operating expenses	83,520	92,739	284,504	276,889
Operating loss	(16,398)	(4,374)	(66,629)	(18,991)
Interest income	49	10	164	78
Interest expense	(404)	(556)	(1,124)	(1,572)
Other income, net	37	43	69	46
Loss before income taxes	(16,716)	(4,877)	(67,520)	(20,439)
Provision for income taxes, net	672	2,672	2,097	3,039
Net loss	$ (17,388)	$ (7,549)	$ (69,617)	$ (23,478)
Net loss per common share - basic and diluted (in dollars per share)	$ (0.45)	$ (0.20)	$ (1.80)	$ (0.61)
Three Months Ended September 30, 2012 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)	38,859		38,859
Three Months Ended September 30, 2011 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)		38,511		38,511
Nine Months Ended September 30, 2012 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)	38,767		38,767
Nine Months Ended September 30, 2011 [Member]
Operating expenses:
Weighted-average common shares outstanding - basic and diluted (in shares)		38,386		38,386