CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Allowance for doubtful accounts (in Dollars)	$ 10,740	$ 105,568
Inventories, net of reserves (in Dollars)	$ 1,549,089	$ 1,110,288
Preferred stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	2,000,000	2,000,000
Preferred stock, shares issued
Common stock, par value (in Dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	29,786,224	29,627,891
Common stock, shares outstanding	18,751,346	18,636,008
Treasury stock, shares	11,034,878	10,991,883