Note 7 - Income Taxes (Details) (USD $)	6 Months Ended
	Sep. 30, 2013	Mar. 31, 2013
Income Tax Disclosure [Abstract]
Income Tax Expense (Benefit)	$ 10,755,000
Tax Credit Carryforward, Amount	235,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	0	0
Operating Loss Carryforwards, Valuation Allowance	$ 422,000