Inventories (Tables)

12 Months Ended

Mar. 31, 2018

Inventory Disclosure [Abstract]

Components of Inventories

The components of inventories are as follows:

	March 31, 2018		March 31, 2017
	(in $000's)
Raw materials and supplies	$	16,481	$	9,784
Work-in-progress		23,179		16,504
Finished goods		10,544		8,643
	$	50,204	$	34,931