Condensed Consolidated Statements Of Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
NET REVENUE	$ 52,603	$ 48,223	$ 147,766	$ 150,529
COST OF GOODS SOLD	35,730	35,955	99,446	110,035
GROSS PROFIT	16,873	12,268	48,320	40,494
OPERATING EXPENSES:
Research and development	8,972	9,368	26,593	28,226
Sales and marketing	3,512	3,558	9,807	10,415
General and administrative	2,512	1,918	8,416	6,918
Total operating expenses	14,996	14,844	44,816	45,559
OPERATING INCOME (LOSS)	1,877	(2,576)	3,504	(5,065)
OTHER INCOME:
Interest income (expense), net	(1)	(4)	(16)	(4)
Other Income, net	(1)	(1)	(1)	12
Total other income (expense), net	(2)	(5)	(17)	8
INCOME (LOSS) BEFORE INCOME TAXES AND DISCONTINUED OPERATIONS	1,875	(2,581)	3,487	(5,057)
INCOME TAX EXPENSE	100	153	183	462
INCOME (LOSS) FROM CONTINUING OPERATIONS	1,775	(2,734)	3,304	(5,519)
INCOME (LOSS) FROM DISCONTINUED OPERATIONS	(18)	(280)	(452)	(4,411)
NET INCOME (LOSS)	1,757	(3,014)	2,852	(9,930)
NET EARNINGS (LOSS) PER SHARE:
Basic and diluted earnings (loss) per share from continuing operations	$ 0.03	$ (0.05)	$ 0.06	$ (0.10)
Loss per share from discontinued operations	$ 0.00	$ 0.00	$ (0.01)	$ (0.08)
Basic and diluted (in usd per share)	$ 0.03	$ (0.05)	$ 0.05	$ (0.17)
WEIGHTED AVERAGE SHARES USED TO CALCULATE NET INCOME (LOSS) PER SHARE:
Weighted Average Number of Shares Outstanding, Basic	58,736	57,327	58,376	56,768
Weighted Average Number of Shares Outstanding, Diluted	60,062	57,327	58,879	56,768
COMPREHENSIVE LOSS:
NET INCOME (LOSS)	1,757	(3,014)	2,852	(9,930)
Foreign currency translation adjustment	11	(49)	215	(10)
Comprehensive loss	$ 1,768	$ (3,063)	$ 3,067	$ (9,940)