Note 7 - Net Loss per Share (Details) - Schedule of Earnings Per Share, Basic and Diluted - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Mar. 31, 2018
Basic net loss per share computation:
Net loss	$ (746,073)	$ (286,091)	$ (4,322,311)
Add: Preferred dividends	(60,000)	0
Add: Change in fair value of warrants	0	95,000
Diluted loss	$ (806,073)	$ (381,091)
Weighted-average common shares outstanding (in Shares)	3,255,887	3,255,887
Incremental shares attributable to the assumed exercise of outstanding stock options and warrants (in Shares)	0	10,653
Total adjusted weighted-average shares (in Shares)	3,255,887	3,266,540
Diluted net loss per share (in Dollars per share)	$ (0.25)	$ (0.12)
Net loss attributable to common shareholders	$ (806,073)	$ (286,091)
Basic net loss per share (in Dollars per share)	$ (0.25)	$ (0.09)