Condensed Consolidated Statements of Operations-Unaudited (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Condensed Consolidated Statements of Operations [Abstract]
REVENUES	$ 7,307	$ 9,629	$ 22,063	$ 28,295
Cost and expenses:
Manufacturing cost of sales	5,514	6,930	16,666	19,591
Engineering, selling and administrative	2,249	2,577	6,944	7,635
Total Cost and Expenses	7,763	9,507	23,610	27,226
OPERATING INCOME (LOSS)	(456)	122	(1,547)	1,069
Other income (expense):
Interest expense	(23)	(41)	(78)	(82)
Other income (expense)	18	10	(21)	24
Total Other Income (Expense)	(5)	(31)	(99)	(58)
INCOME (LOSS) BEFORE INCOME TAXES	(461)	91	(1,646)	1,011
Income tax benefit (provision)	147	0	524	(333)
NET INCOME (LOSS)	$ (314)	$ 91	$ (1,122)	$ 678
Weighted average number of shares used in basic and diluted net income (loss) per common share calculation (in shares)	2,593,760	2,609,334	2,596,280	2,569,717
BASIC AND DILUTED NET INCOME (LOSS) PER COMMON SHARE (in dollars per share)	$ (0.12)	$ 0.03	$ (0.43)	$ 0.26