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Inventories (Tables)
 12 Months Ended
Apr. 30, 2019
Inventories [Abstract]  
Inventories
Inventories, net at April 30 were as follows:

  
2019
  
2018
 
Finished Goods
 
$
33,736
  
$
36,503
 
Work-in-Process
  
2,094
   
2,139
 
Paper and Other Materials
  
373
   
550
 
   
36,203
   
39,192
 
Inventory Value of Estimated Sales Returns
  
3,739
   
4,626
 
LIFO Reserve
  
(4,360
)
  
(4,329
)
Total Inventories
 
$
35,582
  
$
39,489