Inventories (Tables)

6 Months Ended

Sep. 30, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories consisted of the following (in thousands):

	September 30, 2019			March 31, 2019
At cost - FIFO basis:
Raw materials	$	94,322		$	88,786
Work-in-process	29,681			32,547
Finished goods	36,686			40,523
Total at cost FIFO basis	160,689			161,856
LIFO cost less than FIFO cost	(18,262		)	(15,593		)
Net inventories	$	142,427		$	146,263