Inventories (Details) - USD ($) $ in Thousands	Apr. 30, 2020	Apr. 30, 2019
Inventory Disclosure [Abstract]
Raw materials	$ 51,460	$ 46,054
Work-in-process	42,381	43,794
Finished goods	32,572	34,873
Total FIFO inventories	126,413	124,721
Reserve to adjust inventories to LIFO value	(14,577)	(16,193)
Total inventory	111,836	108,528
Carried under FIFO	66,000	58,600
Carried under LIFO	$ 45,800	$ 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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No definition available.

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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.

+ 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.

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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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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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