Inventories - Major Classifications of Inventories (Detail) - USD ($) $ in Thousands |
Sep. 30, 2026 |
Mar. 31, 2026 |
|---|---|---|
| Inventory Disclosure [Abstract] | ||
| Raw materials and supplies | $ 11,519 | $ 9,342 |
| Work in process | 41,096 | 39,685 |
| Finished products | 2,754 | 1,731 |
| Total | $ 55,369 | $ 50,758 |
| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition 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. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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