CONDENSED CONSOLIDATED BALANCE SHEETS [Parenthetical] (USD $)	Jul. 31, 2013	Jan. 31, 2013
Allowance for doubtful accounts (in dollars)	$ 303,700	$ 342,100
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	5,707,422	5,688,600
Common stock, shares outstanding	5,350,981	5,332,159
Treasury stock, shares	356,441	356,441