Note 2 - Significant Accounting Policies (Tables)

3 Months Ended

Sep. 30, 2018

Notes Tables

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

	September 30, 2018		September 30, 2017
Warrants		16,097,956		8,378,088
Options		7,152,225		4,545,037
Convertible debt		7,743,155		9,441,633
Convertible preferred stock		17,250		16,250

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three months ended September 30, 2018			Three months ended September 30, 2017
Shares issued – beginning of period		25,939,892			24,748,213
Shares held by subsidiaries (Note 7)		(704,309	)		(704,309	)
Shares outstanding – beginning of period		25,235,583			24,043,904
Weighted average shares issued during the period		424,147			23,189
Basic weighted average shares – end of period		25,659,730			24,067,093