Inventories (Components Of Inventories) (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Apr. 30, 2019
Inventory, Net [Abstract]
Raw materials	$ 55,875	$ 46,054
Work-in-process	45,230	43,794
Finished goods	37,018	34,873
Total FIFO inventories	138,123	124,721
Reserve to adjust inventories to LIFO value	(16,193)	(16,193)
Total inventories	121,930	108,528
Inventory carried under FIFO	72,900	58,600
Inventory carried under LIFO	$ 49,000	$ 49,900

The amount of FIFO (first in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

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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.

+ References

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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.

+ References

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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.

+ References

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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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- Definition

The amount of LIFO (last in first out) inventory present at the reporting date when inventory is also valued using different valuation methods.

+ References

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