Condensed Consolidated Statements of Operations-Unaudited (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Condensed Consolidated Statements of Operations [Abstract]
REVENUES	$ 7,398	$ 7,174
Cost and expenses:
Manufacturing cost of sales	4,996	5,577
Engineering, selling and administrative	2,680	2,398
OPERATING LOSS	(278)	(801)
Other income (expense):
Interest expense, net	(19)	(27)
Other income (expense), net	1	(31)
Total Other Expense	(18)	(58)
LOSS BEFORE INCOME TAXES	(296)	(859)
Income tax benefit	213	266
NET LOSS	$ (83)	$ (593)
Weighted average number of shares used in basic and diluted net income (loss) per common share calculation (in shares)	2,598,144	2,595,242
BASIC AND DILUTED NET INCOME (LOSS) PER COMMON SHARE (in dollars per share)	$ (0.03)	$ (0.23)