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Inventories (Tables)
9 Months Ended
Oct. 31, 2020
Inventory Disclosure [Abstract]  
Components of Inventories The components of inventories are as follows:
(In thousands)
  
October 31, 2020
    
January 31, 2020
 
Materials and Supplies
   $ 21,058      $ 20,151  
Work-In-Process
     1,631        1,408  
Finished Goods
     16,464        17,992  
  
 
 
    
 
 
 
     39,153        39,551  
Inventory Reserve
     (8,285      (5,626
  
 
 
    
 
 
 
   $ 30,868      $ 33,925