Inventories (Tables)

9 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Components of inventories

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

	December 31, 2014		March 31, 2014
Raw materials	$	14,301	$	9,734
Work in process	190,573		179,692
Finished goods	71,269		73,299
	$	276,143	$	262,725