Condensed Consolidated Statements Of Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Statement [Abstract]
NET REVENUE	$ 52,121	$ 52,603	$ 148,550	$ 147,766
COST OF GOODS SOLD	35,159	35,730	100,300	99,446
GROSS PROFIT	16,962	16,873	48,250	48,320
OPERATING EXPENSES:
Research and development	9,516	8,972	28,332	26,593
Sales and marketing	3,522	3,512	10,659	9,807
General and administrative	3,836	2,512	9,585	8,416
Total operating expenses	16,874	14,996	48,576	44,816
OPERATING INCOME (LOSS)	88	1,877	(326)	3,504
OTHER INCOME (EXPENSE):
Interest income (expense), net	(4)	(1)	(26)	(16)
Other Income, net	2	(1)	23	(1)
Total other income (expense), net	(2)	(2)	(3)	(17)
INCOME (LOSS) BEFORE INCOME TAXES AND DISCONTINUED OPERATIONS	86	1,875	(329)	3,487
INCOME TAX EXPENSE	46	100	121	183
INCOME (LOSS) FROM CONTINUING OPERATIONS	40	1,775	(450)	3,304
LOSS FROM DISCONTINUED OPERATIONS	0	(18)	0	(452)
NET INCOME (LOSS)	40	1,757	(450)	2,852
NET INCOME (LOSS) PER SHARE:
Basic and diluted earnings (loss) per share from continuing operations	$ 0.00	$ 0.03	$ (0.01)	$ 0.06
Loss per share from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ (0.01)
Basic and diluted (in usd per share)	$ 0.00	$ 0.03	$ (0.01)	$ 0.05
WEIGHTED AVERAGE SHARES USED TO CALCULATE NET INCOME (LOSS) PER SHARE:
Weighted Average Number of Shares Outstanding, Basic	60,396	58,736	60,021	58,376
Weighted Average Number of Shares Outstanding, Diluted	63,755	60,062	60,021	58,879
COMPREHENSIVE LOSS:
NET INCOME (LOSS)	40	1,757	(450)	2,852
Foreign currency translation adjustment	51	11	22	215
Comprehensive loss	$ 91	$ 1,768	$ (428)	$ 3,067