Inventories (Tables)

6 Months Ended

Sep. 30, 2020

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories consisted of the following (in thousands):

	September 30, 2020		March 31, 2020
At cost - FIFO basis:
Raw materials	$	80,206	$	85,452
Work-in-process	22,761		25,876
Finished goods	28,107		33,216
Total at cost FIFO basis	131,074		144,544
LIFO cost less than FIFO cost	(18,979)		(17,171)
Net inventories	$	112,095	$	127,373