Note 4 - Earnings (Loss) Per Share (Details) - Basic Loss Attributable To Common Stockholders (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Basic Loss Attributable To Common Stockholders [Abstract]
Net loss	$ (1,508,271)	$ (1,769,091)	$ (2,566,745)	$ (2,762,728)
Cumulative dividends	(75,000)	(7,500)	(150,000)	(15,000)
Net loss attributable to common shareholders	$ (1,583,271)	$ (1,776,591)	$ (2,716,745)	$ (2,777,728)