Inventories (Tables)

3 Months Ended

Jun. 30, 2015

Inventory Disclosure [Abstract]

Components of inventories

The components of inventories consist of the following (amounts in thousands):

	June 30, 2015		March 31, 2015
Raw materials	$	14,066	$	13,263
Work in process	216,390		197,565
Finished goods	73,234		68,628
	$	303,690	$	279,456