Inventories (Tables)

12 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Components of Inventories

The components of inventories are as follows:

	March 31, 2020		March 31, 2019
	(in $000's)
Raw materials and supplies	$	31,411	$	24,468
Work-in-progress		35,008		35,195
Finished goods		23,669		21,279
	$	90,088	$	80,942