Note 5. Convetible Debt - Related Party (Details) (USD $)			6 Months Ended		6 Months Ended
	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2013 The 2013 Note [Member]	Sep. 30, 2013 Replacement Note [Member] Chairman, Lewis C. Pell [Member]	Sep. 30, 2013 Replacement Note [Member]	Sep. 19, 2012 Replacement Note [Member]	Sep. 30, 2013 The Original Agreement [Member] Chairman, Lewis C. Pell [Member]	Sep. 30, 2013 The Original Agreement [Member]	Sep. 30, 2013 The Letter Agreement [Member]
Note 5. Convetible Debt - Related Party (Details) [Line Items]
Related Party Transaction, Rate			1.66%		0.84%
Debt Instrument, Convertible, Conversion Price (in Dollars per share)			$ 0.89		$ 1.20
Convertible Debt, Noncurrent	$ 20,000,000	$ 17,000,000		$ 15,000,000		$ 20,000,000
Notes Payable, Related Parties, Additional Borrowings Increase (Decrease)					5,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)							1,880,620
Fair Value Assumptions, Exercise Price (in Dollars per share)								$ 1.86
Deferred Costs, Noncurrent						1,200,000
Accrued Liabilities, Current	778,000	728,000			150,000
Long Term Debt Maximum Amount Lender Agreed To Provide Financial Assistance									$ 5,000,000