Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Revenues	$ 22,484	$ 25,212
Costs and expenses:
Cost of sales	13,052	13,220
Selling, general and administrative	8,458	8,994
Research and development	933	506
	22,443	22,720
Operating income	41	2,492
Interest expense		(25)
Interest income	15
Other (expense) income	(80)	21
(Loss) income before income taxes	(24)	2,488
Income tax benefit (expense)	3	(945)
Net (loss) income	$ (21)	$ 1,543
Net (loss) income per common share:
Basic (in Dollars per share)	$ 0.00	$ 0.07
Diluted (in Dollars per share)	$ 0.00	$ 0.06
Weighted-average number of common shares outstanding:
Basic (in Shares)	22,112,000	23,591,000
Diluted (in Shares)	22,112,000	24,261,000