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Inventories (Tables)
12 Months Ended
Apr. 30, 2022
Inventories [Abstract]  
Inventories
Inventories, net consisted of the following at April 30:

 
2022
   
2021
 
Finished goods
 
$
31,270
   
$
31,704
 
Work-in-process
   
1,729
     
2,060
 
Paper and other materials
   
275
     
331
 
Total inventories before estimated sales returns and LIFO reserve
   
33,274
     
34,095
 
Inventory value of estimated sales returns
   
7,820
     
10,886
 
LIFO reserve
   
(4,509
)
   
(2,443
)
Inventories, net
 
$
36,585
   
$
42,538