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Inventories (Tables)
6 Months Ended
Jul. 31, 2021
Inventory Disclosure [Abstract]  
Components of Inventories The components of inventories are as follows:
 
(In thousands)
  
July 31, 2021
    
January 31, 2021
 
Materials and Supplies
   $ 19,609      $ 20,265  
Work-In-Process
     2,205        2,076  
Finished Goods
     15,871        16,371  
    
 
 
    
 
 
 
       37,685        38,712  
Inventory Reserve
     (8,595      (8,652
    
 
 
    
 
 
 
     $ 29,090      $ 30,060