CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Net revenues:
Product revenues	$ 4,016	$ 11,881	$ 9,827	$ 23,821
Service revenues	3,037	2,196	5,453	3,062
Total net revenues	7,053	14,077	15,280	26,883
Cost of revenues:
Cost of product revenues	1,305	5,331	3,085	10,559
Provision for excess and obsolete inventories	0	269	160	560
Cost of service revenues	1,034	1,001	2,038	1,529
Total cost of revenues	2,339	6,601	5,283	12,649
Gross profit	4,714	7,476	9,997	14,234
Operating expenses:
Research and development	4,490	3,636	9,055	7,708
Marketing and sales	2,076	1,914	4,064	3,732
General and administrative	1,915	2,013	3,774	3,830
Restructuring charges, net	0	0	467	402
Reversal of accrued royalties, net	(825)		(1,575)
Total operating expenses	7,656	7,563	15,785	15,672
Operating loss	(2,942)	(87)	(5,788)	(1,438)
Other (expense) income:
Other (expense) income	(8)	848	(13)	970
Interest:
Interest income	68	26	92	37
Interest expense	(68)	(205)	(193)	(374)
Interest expense, net	0	(179)	(101)	(337)
Total other (expense) income, net	(8)	669	(114)	633
(Loss) income before income taxes	(2,950)	582	(5,902)	(805)
Income taxes	49	99	246	165
Net (loss) income	$ (2,999)	$ 483	$ (6,148)	$ (970)
Basic and diluted (loss) income per common share:
Net (loss) income per common share - basic (in dollars per share)	$ (0.11)	$ 0.02	$ (0.24)	$ (0.05)
Net (loss) income per common share - diluted (in dollars per share)	$ (0.11)	$ 0.02	$ (0.24)	$ (0.05)
Weighted average common shares outstanding - basic (in shares)	26,853	21,510	25,263	20,926
Weighted average common shares outstanding - diluted (in shares)	26,853	22,326	25,263	20,926