Condensed Consolidated Statements of Operations-Unaudited (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Condensed Consolidated Statements of Operations [Abstract]
REVENUES	$ 7,582	$ 9,646	$ 14,756	$ 18,666
Cost and expenses:
Manufacturing cost of sales	5,575	6,583	11,152	12,661
Engineering, selling and administrative	2,297	2,499	4,695	5,058
Total Cost and Expenses	7,872	9,082	15,847	17,719
OPERATING INCOME (LOSS)	(290)	564	(1,091)	947
Other income (expense):
Interest expense	(28)	(29)	(54)	(41)
Other income (expense)	(8)	5	(40)	14
Total Other Income (Expense)	(36)	(24)	(94)	(27)
INCOME (LOSS) BEFORE INCOME TAXES	(326)	540	(1,185)	920
Income tax benefit (provision)	111	(194)	377	(333)
NET INCOME (LOSS)	$ (215)	$ 346	$ (808)	$ 587
Weighted average number of shares used in basic and diluted net income (loss) per common share calculation (in shares)	2,599,866	2,617,260	2,597,554	2,549,580
BASIC AND DILUTED NET INCOME (LOSS) PER COMMON SHARE (in dollars per share)	$ (0.08)	$ 0.13	$ (0.31)	$ 0.23