CONSOLIDATED BALANCE SHEETS (Unaudited) (PARENTHETICAL) - $ / shares	Jul. 31, 2020	Jan. 31, 2020	Jul. 31, 2019
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	11,490,610	11,443,308	11,442,021
Common Stock Class Undefined
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	28,063,179	27,859,328	27,853,680
Common Stock, shares outstanding	28,063,179	27,859,328	27,853,680
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	6,608,548	6,603,645	6,587,956
Common Stock, shares outstanding	6,608,548	6,603,645	6,587,956