Consolidated Statement of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net revenues	$ 10,794	$ 9,900	$ 31,934	$ 30,091
Cost of revenues	5,626	5,144	16,499	15,765
Gross margin	5,168	4,756	15,435	14,326
Selling expense	1,462	1,255	4,318	3,972
Engineering and product development expense	894	945	2,704	2,866
General and administrative expense	1,528	1,469	4,681	4,548
Total operating expenses	3,884	3,669	11,703	11,386
Operating income	1,284	1,087	3,732	2,940
Other income (expense)	(16)	27	1	31
Earnings before income tax expense	1,268	1,114	3,733	2,971
Income tax expense	431	24	1,253	586
Net earnings	$ 837	$ 1,090	$ 2,480	$ 2,385
Net earnings per common share - basic (in Dollars per share)	$ 0.08	$ 0.11	$ 0.24	$ 0.23
Weighted average common shares outstanding - basic (in Shares)	10,440,803	10,377,189	10,424,001	10,358,960
Net earnings per common share - diluted (in Dollars per share)	$ 0.08	$ 0.10	$ 0.24	$ 0.23
Weighted average common shares and common share equivalents outstanding - diluted (in Shares)	10,477,814	10,404,095	10,461,075	10,383,970