Condensed Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Income Statement [Abstract]
NET SALES	$ 14,108	$ 10,489	$ 26,916	$ 20,074
Cost of sales	10,441	8,183	20,059	15,677
GROSS MARGIN	3,667	2,306	6,857	4,397
Technical services and research and development	101	66	183	132
Selling, general and administrative expenses	1,359	1,065	2,583	2,224
OPERATING INCOME	2,207	1,175	4,091	2,041
OTHER EXPENSE:
Interest expense	(112)	(101)	(254)	(197)
Gain (loss) on foreign currency exchange rate	(20)	(9)	3	(57)
Other, net	1	7	1	7
INCOME BEFORE INCOME TAX	2,076	1,072	3,841	1,794
Income tax expense	517	91	886	138
NET INCOME	1,559	981	2,955	1,656
Less: Preferred Stock Dividends				15
Basic Income Available to Common Shareholders	1,559	981	2,955	1,641
Plus: 6% Convertible Debenture Interest Expense	14	22	36	44
Plus: Preferred Stock Dividends				15
Diluted Income Available to Common Shareholders	$ 1,573	$ 1,003	$ 2,991	$ 1,700
Income per common share:
Basic (in dollars per share)	$ 0.56	$ 0.47	$ 1.14	$ 0.81
Diluted (in dollars per share)	$ 0.45	$ 0.30	$ 0.87	$ 0.53
Weighted average common shares outstanding:
Basic (in shares)	2,769	2,091	2,585	2,017
Diluted (in shares)	3,462	3,293	3,451	3,216