Inventories (Tables)

9 Months Ended

Dec. 31, 2019

Inventory Disclosure [Abstract]

Schedule of Inventory, Current

Inventories consisted of the following (in thousands):

	December 31, 2019			March 31, 2019
At cost - FIFO basis:
Raw materials	$	93,778		$	88,786
Work-in-process	24,819			32,547
Finished goods	35,204			40,523
Total at cost FIFO basis	153,801			161,856
LIFO cost less than FIFO cost	(18,352		)	(15,593		)
Net inventories	$	135,449		$	146,263