Supplemental Disclosures of Cash Flow Information (Tables)

12 Months Ended

Mar. 31, 2013

Supplemental Cash Flow Elements [Abstract]

Schedule of supplemental cash flow information

Additional information related to the Consolidated Statements of Cash Flows is as follows:

	Year ended March 31,
(In thousands)	2013	2012		2011
Cash payment for interest	342	446		686
Cash payments (refunds) from income tax, net	211	(1,434	)	(8,579	)
Acquisition of property and equipment under lease obligations	409	273		2,323
Asset retirement obligation	—	744		—