Note 9. Segment Information (Details) - Reconciliation To Loss Before Provision For Income Taxes (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Reconciliation To Loss Before Provision For Income Taxes [Abstract]
Operating loss	$ (1,283)	$ (2,621)	$ (3,672)	$ (4,925)
Interest expense, net	(43)	(236)	(84)	(429)
Other, net	6	(35)	2	(40)
Debt cost expense		(128)		(272)
Loss on extinguishment of debt		(1,244)		(1,244)
Loss before provision for income taxes	$ (1,320)	$ (4,264)	$ (3,754)	$ (6,910)