Condensed Consolidated Income Statements (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Income Statement [Abstract]
NET SALES	$ 10,732	$ 14,108	$ 22,159	$ 26,916
Cost of sales	9,020	10,441	18,953	20,059
GROSS MARGIN	1,712	3,667	3,206	6,857
Technical services and research and development	171	101	324	183
Selling, general and administrative expenses	1,247	1,359	2,525	2,583
Loss on disposal of assets			10
OPERATING INCOME	294	2,207	347	4,091
OTHER EXPENSE:
Interest expense, net	(99)	(112)	(183)	(254)
Gain (loss) on foreign currency exchange rate	20	(20)	(67)	3
Other, net		1	12	1
INCOME BEFORE INCOME TAX	215	2,076	109	3,841
Income tax expense	65	517	34	886
NET INCOME	150	1,559	75	2,955
Plus: 6% Convertible Debenture Interest Expense		14		36
Income Available to Common Shareholders	$ 150	$ 1,573	$ 75	$ 2,991
Income per common share:
Basic (in dollars per share)	$ 0.05	$ 0.56	$ 0.03	$ 1.14
Diluted (in dollars per share)	$ 0.04	$ 0.45	$ 0.02	$ 0.87
Weighted average common shares outstanding:
Basic (in shares)	2,998	2,769	2,992	2,585
Diluted (in shares)	3,404	3,462	3,196	3,451