Condensed Consolidated Statements Of Comprehensive Loss (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Statement [Abstract]
NET REVENUE	$ 48,222	$ 50,683	$ 96,429	$ 95,163
COST OF GOODS SOLD	32,199	33,676	65,141	63,716
GROSS PROFIT	16,023	17,007	31,288	31,447
OPERATING EXPENSES:
Research and development	9,340	8,908	18,816	17,621
Sales and marketing	3,843	3,187	7,137	6,295
General and administrative	2,851	2,767	5,749	5,904
Total operating expenses	16,034	14,862	31,702	29,820
OPERATING INCOME (LOSS)	(11)	2,145	(414)	1,627
OTHER INCOME (EXPENSE):
Interest income (expense), net	(4)	(8)	(22)	(15)
Other Income, net	11	1	21	0
Total other income (expense), net	7	(7)	(1)	(15)
INCOME (LOSS) BEFORE INCOME TAXES AND DISCONTINUED OPERATIONS	(4)	2,138	(415)	1,612
INCOME TAX EXPENSE	74	49	75	83
INCOME (LOSS) FROM CONTINUING OPERATIONS	(78)	2,089	(490)	1,529
LOSS FROM DISCONTINUED OPERATIONS			0	(433)
NET INCOME (LOSS)	(78)	2,077	(490)	1,096
NET INCOME (LOSS) PER SHARE:
Basic and diluted earnings (loss) per share from continuing operations	$ 0.00	$ 0.04	$ (0.01)	$ 0.03
Loss per share from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ (0.01)
Basic and diluted (in usd per share)	$ 0.00	$ 0.04	$ (0.01)	$ 0.02
WEIGHTED AVERAGE SHARES USED TO CALCULATE NET INCOME (LOSS) PER SHARE:
Weighted Average Number of Shares Outstanding, Basic	60,159	58,384	59,920	58,194
Weighted Average Number of Shares Outstanding, Diluted	60,159	58,797	59,920	58,616
COMPREHENSIVE LOSS:
NET INCOME (LOSS)	(78)	2,077	(490)	1,096
Foreign currency translation adjustment	(29)	60	1	204
Comprehensive loss	$ (77)	$ 2,137	$ (519)	$ 1,300