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Inventories (Details) - USD ($)
$ in Thousands
Dec. 31, 2024
Mar. 31, 2024
Inventory Disclosure [Abstract]    
Raw materials $ 167,758 $ 151,031
Work-in-process 26,271 26,669
Finished goods 39,409 40,554
Total at cost FIFO basis 233,438 218,254
LIFO cost less than FIFO cost (32,751) (32,163)
Net inventories $ 200,687 $ 186,091