Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Net revenues	$ 10,731	$ 11,704
Cost of revenues	6,135	6,611
Gross margin	4,596	5,093
Operating expenses:
Selling expense	1,406	1,385
Engineering and product development expense	924	813
General and administrative expense	1,991	1,634
Restructuring and other charges	359
Total operating expenses	4,680	3,832
Operating income (loss)	(84)	1,261
Other income (expense):
Interest income	1	3
Interest expense		(1)
Other	12	54
Total other income	13	56
Earnings (loss) before income tax expense (benefit)	(71)	1,317
Income tax expense (benefit)	(28)	60
Net earnings (loss)	$ (43)	$ 1,257
Net earnings (loss) per common share - basic (in Dollars per share)	$ 0.00	$ 0.13
Weighted average common shares outstanding - basic (in Shares)	10,205,114	10,067,748
Net earnings (loss) per common share - diluted (in Dollars per share)	$ 0.00	$ 0.12
Weighted average common shares and common share equivalents outstanding - diluted (in Shares)	10,205,114	10,266,644