INVENTORIES (Tables)

3 Months Ended

Jun. 30, 2013

INVENTORIES

Schedule of components of inventories

(In thousands)	June 30,2013		March 31,2013
Raw materials, completed sub-assemblies, and spare parts	$	19,919	$	21,450
Work-in-process	25,130		21,129
Finished goods	5,326		5,472
Total	$	50,375	$	48,051