Consolidated Statements Of Operations and Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
NET REVENUE	$ 194,548	$ 195,827	$ 251,838
COST OF GOODS SOLD	146,177	150,544	207,653
GROSS PROFIT	48,371	45,283	44,185
OPERATING EXPENSES:
Research and development	34,199	31,196	28,113
Sales and marketing	14,133	13,225	11,837
General and administrative	9,900	8,506	9,162
Restructuring charge (recovery)	(205)	668	2,089
Total operating expenses	58,027	53,595	51,201
OPERATING LOSS	(9,656)	(8,312)	(7,016)
OTHER INCOME:
Interest income (expense), net	(8)	16	(19)
Other income, net	11	(39)	16
Total other income (expense), net	3	(23)	(3)
LOSS BEFORE INCOME TAXES AND DISCONTINUED OPERATIONS	(9,653)	(8,335)	(7,019)
INCOME TAX EXPENSE	749	129	213
Loss from continuing operations	(10,402)	(8,464)	(7,232)
LOSS FROM DISCONTINUED OPERATIONS	(4,548)	(13,560)	(6,019)
NET LOSS	(14,950)	(22,024)	(13,251)
NET LOSS PER SHARE:
Loss from continuing operations (in usd per share)	$ (0.18)	$ (0.15)	$ (0.14)
Loss from discontinued operations (in usd per share)	$ (0.08)	$ (0.25)	$ (0.11)
Basic and diluted (in usd per share)	$ (0.26)	$ (0.40)	$ (0.25)
WEIGHTED AVERAGE SHARES USED TO CALCULATE NET LOSS PER SHARE:
Basic and diluted (in shares)	56,954	54,908	53,015
COMPREHENSIVE LOSS:
NET LOSS	(14,950)	(22,024)	(13,251)
Foreign currency translation adjustment	129	(78)	(145)
Comprehensive loss	$ (14,821)	$ (22,102)	$ (13,396)