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Inventories (Tables)
12 Months Ended
Apr. 30, 2023
Inventory Disclosure [Abstract]  
Schedule of Inventories
Inventories, net consisted of the following at April 30:
20232022
Finished goods$29,339 $31,270 
Work-in-process1,031 1,729 
Paper and other materials248 275 
Total inventories before estimated sales returns and LIFO reserve30,618 33,274 
Inventory value of estimated sales returns6,923 7,820 
LIFO reserve(6,808)(4,509)
Inventories, net$30,733 $36,585