Inventories (Details) - USD ($) $ in Thousands	Apr. 30, 2019	Apr. 30, 2018
Inventory, Net [Abstract]
Finished Goods	$ 33,736	$ 36,503
Work-in-Process	2,094	2,139
Paper and Other Materials	373	550
Gross inventory	36,203	39,192
Inventory Value of Estimated Sales Returns	3,739	4,626
LIFO Reserve	(4,360)	(4,329)
Total Inventories	35,582	39,489
Inventory obsolescence reserve	$ 15,800	$ 18,200

Amount of inventory reserves for estimated sales returns.

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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 of valuation reserve for inventory.

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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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