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Inventories (Tables)
6 Months Ended
Oct. 31, 2021
Inventories [Abstract]  
Inventories
Inventories, net consisted of the following:

 
October 31, 2021
   
April 30, 2021
 
Finished goods
 
$
29,288
   
$
31,704
 
Work-in-process
   
1,576
     
2,060
 
Paper and other materials
   
313
     
331
 
Total inventories before estimated sales returns and LIFO reserve
 
$
31,177
   
$
34,095
 
Inventory value of estimated sales returns
   
10,991
     
10,886
 
LIFO reserve
   
(2,443
)
   
(2,443
)
Inventories, net
 
$
39,725
   
$
42,538