Consolidated Statements of Operations (USD $) In Thousands, except Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenues	$ 19,021	$ 18,902	$ 41,643	$ 36,519
Costs and expenses:
Cost of sales	10,553	11,067	22,019	20,567
Selling, general and administrative	7,966	8,018	15,917	15,498
Gain on revaluation of ACT liability	(758)		(758)
Research and development	315	165	717	311
[OperatingExpenses]	18,076	19,250	37,895	36,376
Operating income (loss)	945	(348)	3,748	143
Interest expense	(38)	(33)	(78)	(77)
Interest income	4	1	5	2
Other expense	(155)	(166)	(195)	(258)
Income before income taxes	756	(546)	3,480	(190)
Income tax (expense) benefit	(326)	237	(1,711)	95
Net income (loss)	$ 430	$ (309)	$ 1,769	$ (95)
Net income (loss) per common share:
Basic (in Dollars per share)	$ 0.02	$ (0.01)	$ 0.07	$ 0.00
Diluted (in Dollars per share)	$ 0.02	$ (0.01)	$ 0.07	$ 0.00
Weighted-average number of common shares outstanding:
Basic (in Shares)	24,269,000	24,215,000	24,242,000	24,213,000
Diluted (in Shares)	24,909,000	24,215,000	24,900,000	24,213,000