CONDENSED CONSOLIDATED STATEMENTS OF INCOME (unaudited) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net sales	$ 13,619,000	$ 15,057,000
Cost of sales	7,893,000	8,624,000
Gross profit	5,726,000	6,433,000
Operating expenses:
Engineering, design and product development	1,230,000	1,012,000
Selling and marketing	1,965,000	1,786,000
General and administrative	1,888,000	2,034,000
Legal fees associated with lawsuit (Note 8)	12,000	199,000
	5,095,000	5,031,000
Operating income	631,000	1,402,000
Interest and other (expense) income:
Interest, net	(14,000)	(1,000)
Other, net	(8,000)	37,000
	(22,000)	36,000
Income before income taxes	609,000	1,438,000
Income tax provision	215,000	278,000
Net income	$ 394,000	$ 1,160,000
Net income per common share:
Basic (in Dollars per share)	$ 0.05	$ 0.13
Diluted (in Dollars per share)	$ 0.05	$ 0.13
Shares used in per-share calculation:
Basic (in Shares)	8,373	8,717
Diluted (in Shares)	8,553	8,809
Dividends declared and paid per common share: (in Dollars per share)	$ 0.07	$ 0.06