Note 9. Segment Information (Detail) - Reconciliation To Loss Before Provision For Income Taxes (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Operating loss	$ (2,304)	$ (2,491)
Interest expense, net	(193)	(94)
Debt cost expense	(144)	(41)
Other, net	(5)	(1)
Loss before provision for income taxes	$ (2,646)	$ (2,627)