Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Net revenues	$ 47,266	$ 46,204
Cost of revenues	24,373	24,059
Gross margin	22,893	22,145
Operating expenses:
Selling expense	5,708	5,717
Engineering and product development expense	3,240	3,044
General and administrative expense	6,367	6,034
Total operating expenses	15,315	14,795
Operating income	7,578	7,350
Other income (expense):
Interest income	13	12
Interest expense	(4)	(64)
Other	72	102
Total other income	81	50
Earnings before income tax expense (benefit)	7,659	7,400
Income tax expense (benefit)	(2,204)	148
Net earnings	$ 9,863	$ 7,252
Net earnings per common share:
Basic	$ 0.97	$ 0.72
Diluted	$ 0.96	$ 0.72
Weighted average common shares outstanding:
Basic	10,147,708	10,019,000
Diluted	10,285,621	10,141,552