Inventories

3 Months Ended

Jun. 30, 2018

Inventory Disclosure [Abstract]

Inventories

4. Inventories

Inventories are principally valued at standard cost, which approximates the lower of cost or net realizable value on a first-in, first-out basis. Components of inventories were as follows:

(In thousands)	Jun 30, 2018		Mar 31, 2018
Raw materials and purchased parts	$	61,694	$	52,591
Work-in-process	18,965		18,634
Finished goods	13,606		16,461
	$	94,265	$	87,686