Consolidated Statements of Operations (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]
Revenues	$ 20,190	$ 29,092	$ 38,851	$ 51,576
Costs and expenses:
Cost of sales	11,677	17,227	22,487	30,279
Selling, general and administrative	8,959	9,307	17,703	17,765
Research and development	225	430	469	1,363
Costs and Expenses	20,861	26,964	40,659	49,407
Operating (loss) income	(671)	2,128	(1,808)	2,169
Interest expense	(34)	(10)	(63)	(10)
Interest income	6	14	17	29
Other expense	(39)	(129)	(69)	(209)
(Loss) income before income taxes	(738)	2,003	(1,923)	1,979
Income tax benefit (expense)	18	(767)	117	(764)
Net (loss) income	$ (720)	$ 1,236	$ (1,806)	$ 1,215
Net (loss) income per common share:
Basic (in Dollars per share)	$ (0.03)	$ 0.06	$ (0.08)	$ 0.05
Diluted (in Dollars per share)	$ (0.03)	$ 0.05	$ (0.08)	$ 0.05
Weighted-average number of common shares outstanding:
Basic (in Shares)	22,814	22,197	22,728	22,155
Diluted (in Shares)	22,814	23,295	22,728	23,133