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
Net revenues	$ 10,799	$ 11,681	$ 35,106	$ 37,185
Cost of revenues	6,037	5,548	19,554	19,161
Gross margin	4,762	6,133	15,552	18,024
Operating expenses:
Selling expense	1,322	1,461	4,283	4,433
Engineering and product development expense	1,006	809	2,910	2,444
General and administrative expense	1,445	1,448	5,101	4,748
Restructuring and other charges			359
Total operating expenses	3,773	3,718	12,653	11,625
Operating income	989	2,415	2,899	6,399
Other income (expense):
Interest income	1	2	3	8
Interest expense		(1)		(3)
Other	22	4	33	66
Total other income	23	5	36	71
Earnings before income tax expense (benefit)	1,012	2,420	2,935	6,470
Income tax expense (benefit)	348	(2,762)	980	(2,624)
Net earnings	$ 664	$ 5,182	$ 1,955	$ 9,094
Net earnings per common share - basic (in Dollars per share)	$ 0.06	$ 0.51	$ 0.19	$ 0.90
Weighted average common shares outstanding - basic (in Shares)	10,302,417	10,182,795	10,260,601	10,132,807
Net earnings per common share - diluted (in Dollars per share)	$ 0.06	$ 0.50	$ 0.19	$ 0.88
Weighted average common shares and common share equivalents outstanding - diluted (in Shares)	10,360,377	10,297,284	10,348,180	10,287,055