CONDENSED CONSOLIDATED BALANCE SHEETS [PARENTHETICAL] (USD $)	Jul. 31, 2011	Jan. 31, 2011
Allowance for doubtful accounts (In dollars)	$ 312,900	$ 210,100
Reserves on Inventories (In dollars)	$ 1,386,000	$ 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	5,581,678	5,568,744
Common stock, shares outstanding	5,225,237	5,254,303
Treasury stock, shares	356,441	314,441