Inventories (Components Of Inventories) (Details) - USD ($) $ in Thousands	Jul. 31, 2019	Apr. 30, 2019
Inventory, Net [Abstract]
Raw materials	$ 51,331	$ 46,054
Work-in-process	42,597	43,794
Finished goods	37,606	34,873
Total FIFO inventories	131,534	124,721
Reserve to adjust inventories to LIFO value	(16,193)	(16,193)
Total inventories	115,341	108,528
Inventory carried under FIFO	64,300	58,600
Inventory carried under LIFO	$ 51,000	$ 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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- Definition

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.

+ References

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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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