Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net revenues	$ 11,218	$ 13,576	$ 20,191	$ 24,307
Cost of revenues	5,753	7,382	10,621	13,517
Gross margin	5,465	6,194	9,570	10,790
Selling expense	1,528	1,555	2,717	2,961
Engineering and product development expense	925	980	1,921	1,904
General and administrative expense	1,523	1,665	3,079	3,656
Restructuring and other charges			0	359
Total operating expenses	3,976	4,200	7,717	8,880
Operating income	1,489	1,994	1,853	1,910
Other income (expense)	(2)	0	4	13
Earnings before income tax expense	1,487	1,994	1,857	1,923
Income tax expense	484	660	562	632
Net earnings	$ 1,003	$ 1,334	$ 1,295	$ 1,291
Net earnings per common share - basic (in Dollars per share)	$ 0.10	$ 0.13	$ 0.13	$ 0.13
Weighted average common shares outstanding - basic (in Shares)	10,371,716	10,273,812	10,349,695	10,239,463
Net earnings per common share - diluted (in Dollars per share)	$ 0.10	$ 0.13	$ 0.13	$ 0.13
Weighted average common shares and common share equivalents outstanding - diluted (in Shares)	10,394,094	10,359,657	10,380,279	10,342,014