CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Jan. 31, 2012	Jan. 31, 2011
Allowance for doubtful accounts (in dollars)	$ 270,200	$ 210,100
Reserves on Inventories (in dollars)	$ 1,601,131	$ 1,495,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized	1,500,000	1,500,000
Preferred stock, shares issued	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	5,581,919	5,568,744
Common stock, shares outstanding	5,225,478	5,254,303
Treasury stock, shares	356,441	314,441