Consolidated Statements Of Operations And Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Consolidated Statements Of Operations And Comprehensive Loss [Abstract]
NET REVENUE	$ 197,461	$ 252,494	$ 234,383
COST OF GOODS SOLD	155,828	209,664	196,556
GROSS PROFIT	41,633	42,830	37,827
OPERATING EXPENSES:
Research and development	35,551	31,578	28,120
Sales and marketing	13,876	12,164	10,970
General and administrative	9,268	9,928	10,139
Restructuring charge	668	2,196	2,430
Goodwill impairment charge	4,140
Total operating expenses	63,503	55,866	51,659
OPERATING LOSS	(21,870)	(13,036)	(13,832)
OTHER INCOME (LOSS):
Interest income (expense), net	16	(19)	161
Other income (expense), net	(41)	17	6
Total other income (loss), net	(25)	(2)	167
LOSS BEFORE INCOME TAXES	(21,895)	(13,038)	(13,665)
INCOME TAX (BENEFIT) EXPENSE	129	213	(40)
NET LOSS	(22,024)	(13,251)	(13,625)
NET LOSS PER SHARE:
Basic and diluted	$ (0.40)	$ (0.25)	$ (0.29)
WEIGHTED AVERAGE SHARES USED TO CALCULATE NET LOSS PER SHARE:
Basic and diluted	54,908	53,015	47,094
COMPREHENSIVE LOSS:
Net loss	(22,024)	(13,251)	(13,625)
Foreign currency translation adjustments	(78)	(145)	35
Comprehensive loss	$ (22,102)	$ (13,396)	$ (13,590)