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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares
Apr. 30, 2022
Jan. 31, 2022
Jan. 31, 2021
CONDENSED CONSOLIDATED BALANCE SHEETS      
Preferred stock, par value $ 0.10 $ 0.10  
Preferred stock, shares authorized 500,000 500,000  
Preferred stock, shares issued 0 0  
Preferred stock, shares outstanding 0   0
Common stock, par value $ 0.15 $ 0.15  
Common stock, shares authorized 30,000,000 30,000,000  
Common stock, shares issued 15,827,772 15,788,673  
Common stock, shares outstanding 14,585,908 15,257,688  
Treasury stock, shares 1,241,864 530,985