Note 2 - Significant Accounting Policies (Tables)

12 Months Ended

Jun. 30, 2019

Notes Tables

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

	June 30, 2019		June 30, 2018
Warrants		16,696,007		12,245,452
Options		7,411,600		6,827,225
Convertible debt		8,631,772		7,549,082
Convertible preferred stock		18,000		17,000

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

	Year ended June 30, 2019			Year ended June 30, 2018
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		1,286,743			395,155
Diluted weighted average shares – end of period		26,522,326			24,439,059