Note 2 - Significant Accounting Policies (Tables)

6 Months Ended

Dec. 31, 2018

Notes Tables

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

	December 31, 2018		December 31, 2017
Warrants		16,305,320		12,195,920
Options		7,152,225		4,840,037
Convertible debt		8,136,018		6,855,942
Convertible preferred stock		17,500		16,500

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

	Three months ended December 31, 2018			Three months ended December 31, 2017			Six months ended December 31, 2018			Six months ended December 31, 2017
Shares issued – beginning of period		26,996,148			24,809,841			25,939,892			24,748,213
Shares held by subsidiaries (Note 7)		(704,309	)		(704,309	)		(704,309	)		(704,309	)
Shares outstanding – beginning of period		26,291,839			24,105,532			25,235,583			24,043,904
Weighted average shares issued during the period		90,939			127,591			785,681			106,204
Diluted weighted average shares – end of period		26,382,778			24,233,123			26,021,264			24,150,108