CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Net revenues:
Products	$ 131,875	$ 134,231	$ 398,400	$ 397,044
Services	33,090	30,828	94,232	86,131
Total net revenues	164,965	165,059	492,632	483,175
Cost of revenues:
Products	60,048	64,421	187,663	193,527
Services	16,497	14,194	46,196	41,373
Amortization of intangible assets	685	745	2,036	2,657
Total cost of revenues	77,230	79,360	235,895	237,557
Gross profit	87,735	85,699	256,737	245,618
Operating expenses:
Research and development	28,960	28,929	89,386	89,348
Marketing and selling	45,411	43,199	136,273	129,419
General and administrative	13,240	19,698	43,458	48,179
Amortization of intangible assets	2,159	2,283	6,465	7,557
Restructuring and other (recoveries) costs, net	2,707	185	328	5,532
Loss on sales of assets	0	(1,527)	597	(1,527)
Total operating expenses	92,477	92,767	276,507	278,508
Operating loss	(4,742)	(7,068)	(19,770)	(32,890)
Interest income	10	82	78	222
Interest expense	(556)	(175)	(1,695)	(636)
Other income (expense), net	43	63	46	282
Loss before income taxes	(5,245)	(7,098)	(21,341)	(33,022)
(Benefit from) provision for income taxes, net	2,774	2,897	3,657	3,361
Net loss	$ (8,019)	$ (9,995)	$ (24,998)	$ (36,383)
Net loss per common share - basic and diluted (in dollars per share)	$ (0.21)	$ (0.26)	$ (0.65)	$ (0.96)
Weighted-average common shares outstanding - basic and diluted (shares in thousands)	38,511	38,045	38,386	37,826