Inventories (Tables)

6 Months Ended

Sep. 30, 2021

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories consisted of the following (in thousands):

	September 30, 2021		March 31, 2021
At cost - FIFO basis:
Raw materials	$	105,431	$	79,981
Work-in-process	30,984		23,067
Finished goods	31,660		27,201
Total at cost FIFO basis	168,075		130,249
LIFO cost less than FIFO cost	(20,150)		(18,761)
Net inventories	$	147,925	$	111,488