Note 4. Income Taxes (Details) - Deferred Tax Assets (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Deferred Tax Assets [Abstract]
Net operating loss carryforwards	$ 24,310	$ 21,942
Stock-based compensation	2,898	2,595
Nondeductible reserves	248	270
Depreciation and amortization	143	137
Capital loss carryforwards	7	373
Deferred debt cost		199
Other	352	312
Gross deferred tax asset	27,958	25,828
Valuation allowance	(27,958)	(25,828)
Net deferred tax asset	$ 0	$ 0