Inventories (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Mar. 31, 2025
Inventory Disclosure [Abstract]
Raw materials	$ 181,449	$ 163,053
Work-in-process	34,611	30,349
Finished goods	44,479	37,197
Total at cost FIFO basis	260,539	230,599
LIFO cost less than FIFO cost	(38,162)	(32,001)
Net inventories	$ 222,377	$ 198,598

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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

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 852
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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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