Note 4 - Earnings Per Share - Basic and Diluted Earnings Per Share (Details) - USD ($)	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Net loss	$ (92,616)	$ (314,309)
Average common shares outstanding - basic (in shares)	3,169,181	3,180,865
Average common shares outstanding - diluted (in shares)
Loss per common share - basic and diluted (in dollars per share)	$ (0.03)	$ (0.10)