Note 2 - Significant Accounting Policies (Tables)

6 Months Ended

Dec. 31, 2020

Notes Tables

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

	December 31, 2020		December 31, 2019
Warrants		21,270,102		18,784,324
Options		9,511,600		7,801,600
Convertible debt		11,215,175		9,779,000
Convertible preferred stock		19,500		18,500

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

	Three months ended December 31, 2020			Three months ended December 31, 2019			Six months ended December 31, 2020			Six months ended December 31, 2019
Shares issued – beginning of period		31,575,656			28,417,602			31,409,005			28,068,688
Shares held by subsidiaries (Note 7)		(704,309	)		(704,309	)		(704,309	)		(704,309	)
Shares outstanding – beginning of period		30,871,347			27,713,293			30,704,696			27,364,379
Weighted average shares issued during the period		316,298			1,090,714			285,943			771,030
Diluted weighted average shares – end of period		31,187,645			28,804,007			30,990,639			28,135,409