Note 9. Common Stock (Details) (USD $)	1 Months Ended		12 Months Ended	25 Months Ended
	Apr. 27, 2012	Apr. 30, 2012	Mar. 31, 2013	Apr. 27, 2014	Jul. 26, 2012
Note 9. Common Stock (Details) [Line Items]
Maximum Amount Common Stock Available to Sell in Purchase Agreement	$ 15,000,000			$ 21,000,000
Common Stock, Other Value, Outstanding				75,000,000
Fair Value Assumptions, Expected Term				3 years
Sale of Stock, Price Per Share (in Dollars per share)					$ 3.00
Proceeds from Sale of Treasury Stock	1,000,000	1,000,000
Stock Issued During Period, Shares, New Issues (in Shares)				175,333
Stock Issued During Period, Shares, Conversion of Convertible Securities (in Shares)			230,000
Debt Issuance Cost	122,000
Proceeds from Issuance of Common Stock			878,000
Commitment Shares [Member]
Note 9. Common Stock (Details) [Line Items]
Stock Issued During Period, Value, Conversion of Convertible Securities			1,000,000
Lincoln Park Capital Fund, LLC [Member]
Note 9. Common Stock (Details) [Line Items]
Stock Issued During Period, Shares, New Issues (in Shares)				175,333
Maximum [Member]
Note 9. Common Stock (Details) [Line Items]
Stock Issued During Period, Shares, New Issues (in Shares)				215,000
Stock Issued During Period, Value, Conversion of Convertible Securities			$ 15,000,000