Quarterly report pursuant to Section 13 or 15(d)

Inventories

Inventories

6 Months Ended

Sep. 30, 2011

5. Inventories

Inventories are stated at the lower of standard cost (which approximates actual cost on the first-in, first-out method) or market and consisted of the following:

	September 30, 2011			March 31, 2011
	(In thousands)
Raw materials	$	22,415		$	18,649
Work in process	274			290
Finished goods	2,042			1,782
Total	24,731			20,721
Less non-current portion	(1,271		)	(1,454		)
Current portion	$	23,460		$	19,267

The non-current portion of inventories represents that portion of the inventories in excess of amounts expected to be sold or used in the next twelve months. The non-current inventories are primarily comprised of repair parts for older generation products that are still in operation, but are not technologically compatible with current configurations. The weighted average age of the non-current portion of inventories on hand as of September 30, 2011 is 1.6 years. The Company expects to use the non-current portion of the inventories on hand as of September 30, 2011, over the periods presented in the following table:

Expected Period of Use	Non-current Inventory Balance
	(In thousands)
13 to 24 months	$	573
25 to 36 months	425
37 to 48 months	273
Total	$	1,271