Condensed Consolidated Statements Of Comprehensive Loss (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
Income Statement [Abstract]
NET REVENUE	$ 47,768	$ 53,179	$ 102,512	$ 102,353
COST OF GOODS SOLD	36,813	39,984	76,383	77,056
GROSS PROFIT	10,955	13,195	26,129	25,297
OPERATING EXPENSES:
Research and development	9,677	8,946	19,619	16,932
Sales and marketing	3,380	3,649	6,913	6,682
General and administrative	2,473	2,437	5,541	4,778
Restructuring charge (recovery)	73	37	674	(4)
Total operating expenses	15,603	15,069	32,747	28,388
OPERATING LOSS	(4,648)	(1,874)	(6,618)	(3,091)
OTHER INCOME:
Interest expense, net	(7)	(5)	0	(11)
Other Income, net	7	(1)	11	1
Total other income (expense), net	0	(6)	11	(10)
LOSS BEFORE INCOME TAXES	(4,648)	(1,880)	(6,607)	(3,101)
INCOME TAX EXPENSE	400	65	309	115
NET LOSS	(5,048)	(1,945)	(6,916)	(3,216)
NET LOSS PER SHARE:
Basic and diluted (in usd per share)	$ (0.09)	$ (0.04)	$ (0.12)	$ (0.06)
WEIGHTED AVERAGE SHARES USED TO CALCULATE NET LOSS PER SHARE:
Basic and diluted (in shares)	56,934	54,737	56,484	54,536
COMPREHENSIVE LOSS:
Net loss	(5,048)	(1,945)	(6,916)	(3,216)
Foreign currency translation adjustment	(36)	(19)	39	(28)
Comprehensive loss	$ (5,084)	$ (1,964)	$ (6,877)	$ (3,244)