Note 3 - Earnings (Loss) Per Share (Details) - Earnings (Loss) Per Common Share (USD $)	3 Months Ended		6 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings (Loss) Per Common Share [Abstract]
Net loss	$ (1,480,071)	$ (1,508,271)	$ (2,894,947)	$ (2,566,745)
Cumulative dividends	(75,000)	(75,000)	(150,000)	(150,000)
Net loss attributable to common shareholders	$ (1,555,071)	$ (1,583,271)	$ (3,044,947)	$ (2,716,745)