Inventories (Details) - USD ($) $ in Thousands	12 Months Ended
Apr. 30, 2022	Apr. 30, 2021
Inventory, Net [Abstract]
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)
Total inventories	36,585	42,538
Adjustment for lower of cost or net realizable value	$ 11,200	$ 14,000

Amount of inventory reserves for estimated sales returns.

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- Definition

Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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