CONSOLIDATED BALANCE SHEETS (PARENTHETICAL) (USD $)	Apr. 30, 2014	Jan. 31, 2014	Apr. 30, 2013
Preferred Stock, par value	$ 0.01	$ 0.01	$ 0.01
Preferred Stock, shares authorized	5,000,000	5,000,000	5,000,000
Preferred Stock, shares issued	0	0	0
Treasury Stock, shares	8,081,423	7,945,419	7,686,581
Class A Common Stock
Common Stock, par value	$ 0.01	$ 0.01	$ 0.01
Common Stock, shares authorized	30,000,000	30,000,000	30,000,000
Common Stock, shares issued	6,638,262	6,638,262	6,632,967
Common Stock, shares outstanding	6,638,262	6,638,262	6,632,967
Common Stock
Common Stock, par value	$ 0.01	$ 0.01	$ 0.01
Common Stock, shares authorized	100,000,000	100,000,000	100,000,000
Common Stock, shares issued	26,753,324	26,643,108	26,600,097