Quarterly report pursuant to Section 13 or 15(d)

Inventories - Major Classifications of Inventories (Detail)

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Inventories - Major Classifications of Inventories (Detail) - USD ($)
$ in Thousands
Jun. 30, 2021
Mar. 31, 2021
Inventory Disclosure [Abstract]    
Raw materials and supplies $ 4,053 $ 3,490
Work in process 13,396 12,196
Finished products 1,695 1,646
Total $ 19,144 $ 17,332