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Inventories (Tables)
12 Months Ended
Apr. 30, 2020
Inventories [Abstract]  
Inventories
Inventories, net consisted of the following at April 30:

 
2020
   
2019
 
Finished Goods
 
$
36,014
   
$
33,736
 
Work-in-Process
   
1,398
     
2,094
 
Paper and Other Materials
   
331
     
373
 
Total Inventories Before Estimated Sales Returns and LIFO Reserve
   
37,743
     
36,203
 
Inventory Value of Estimated Sales Returns
   
8,686
     
3,739
 
LIFO Reserve
   
(2,815
)
   
(4,360
)
Total Inventories
 
$
43,614
   
$
35,582