Note 7 - Stockholders' Equity (Details Textual)		11 Months Ended	12 Months Ended
	Jul. 01, 2014 $ / shares shares	Jun. 03, 2019 shares	Jun. 30, 2019 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares shares	Jun. 30, 2018 USD ($) $ / shares shares	Aug. 01, 2018 USD ($) $ / shares shares	Jun. 30, 2017 shares
Common Stock Voting Rights Votes Per Share			1
Shares Held by Subsidiaries				704,309	704,309		704,309
Stock Issued During Period, Value, Issued for Services | $			$ 93,408		$ 42,583
Proceeds from the Sale of Units | $			896,801		350,496
Adjustments to Additional Paid in Capital, Warrant Issued | $			6,250		48,350
Common Stock Conversions, Inducements | $					10,784
Proceeds from Warrant Exercises | $					67,841
Class of Warrant or Right, Outstanding			16,700,000
Stock Issued During Period, Shares, CommissionsOnSaleOfUnits			1,028
Shares Issued for Warrant Exercise Commissions | $			$ 514
Weighted Average Exercise Price for Outstanding Warrants | $ / shares			$ 0.95
Weighted Average Remaining Contractual Life for Outstanding Warrants			3 years 219 days
Modification of Warrants | $			$ 163,026
Interest Expense Related to the Modification of Warrants | $			25,467
Share-based Payment Arrangement, Noncash Expense, Total | $			$ 721,084		$ 2,129,112
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			655,000		2,647,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value | $			$ 236,100		$ 1,376,250
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount | $			$ 0
Secured Promissory Note, Consideration for Warrants Expiring on December 31, 2025 [Member]
Financing Receivable, Interest Rate, Stated Percentage			4.00%
Expired [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			70,069
Warrants with Extended Expiration Dates [Member]
Class of Warrant or Right, Outstanding			5,947,864
Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized			30,000,000
Share-based Payment Arrangement, Expense | $			$ 236,100		$ 1,369,350
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			655,000		2,647,500
Stock Option Held by Employees and Consultants [Member]
Share-based Payment Arrangement, Noncash Expense, Total | $					$ 349,656
Subscription Agreement [Member]
Share Price | $ / shares			$ 0.75	$ 1	$ 1
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.50	$ 0.75	$ 0.75
Number of Warrants Per Unit			1	1	1
Warrant Component of Equity Unit, Number of Shares of Restricted Common Stock Called by Each Warrant			0.5	0.5	0.5
Sale of Units, Number Of Units Issued			1,793,606		267,331
Proceeds from the Sale of Units | $			$ 896,801		$ 200,496
Proceeds from Sale of Units, Net of Commissions | $			$ 832,921		$ 185,621
Stock Issued During Period, Shares, New Issues			1,793,606		267,331
Class of Warrant or Right, Issued During Period			896,806		133,666
Warrant Fair Value Price Per Share | $ / shares			$ 0.05	$ 0.05	$ 0.05
Adjustments to Additional Paid in Capital, Warrant Issued | $			$ 31,560		$ 6,152
Adjustments to Additional Paid in Capital, Other | $			$ 865,241		$ 194,344
Subscription Agreement [Member] | Restricted Stock [Member]
Number of Shares Per Unit			1	1	1
Subscription Agreement Two [Member]
Share Price | $ / shares			$ 0.75	$ 0.75	$ 0.75
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.50	$ 0.50	$ 0.50
Number of Warrants Per Unit			1	1	1
Warrant Component of Equity Unit, Number of Shares of Restricted Common Stock Called by Each Warrant			0.5	0.5	0.5
Sale of Units, Number Of Units Issued			1,793,606	300,000
Proceeds from the Sale of Units | $			$ 896,801	$ 150,000
Proceeds from Sale of Units, Net of Commissions | $			$ 832,921
Stock Issued During Period, Shares, New Issues			1,793,606	300,000
Class of Warrant or Right, Issued During Period			896,806	150,000
Warrant Fair Value Price Per Share | $ / shares			$ 0.05	$ 0.05	$ 0.05
Adjustments to Additional Paid in Capital, Warrant Issued | $			$ 31,560	$ 4,991
Adjustments to Additional Paid in Capital, Other | $			$ 865,241	$ 145,009
Subscription Agreement Two [Member] | Restricted Stock [Member]
Number of Shares Per Unit			1	1	1
Subscription Agreement Three [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 1	$ 1
Stock Issued During Period, Shares, New Issues					3,441
Class of Warrant or Right, Reduced Exercise Price From Previous Exercise Price of Warrants or Rights | $ / shares				0.50	$ 0.50
Common Stock Conversions, Inducements | $					$ 10,784
Class of Warrant or Right, Exercised During Period					135,681
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures, Total					135,681
Proceeds from Warrant Exercises | $					$ 67,841
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.60
Minimum [Member] | Expired [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			0.85
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			2
Maximum [Member] | Expired [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 3
Maximum [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period			10 years
Employees and Consultants [Member]
Stock Issued During Period, Shares, Issued for Services			134,162		57,790
Stock Issued During Period, Value, Issued for Services | $			$ 93,408		$ 42,583
Employees and Consultants [Member] | Minimum [Member]
Share Price | $ / shares			$ 0.50	0.52	$ 0.52
Employees and Consultants [Member] | Maximum [Member]
Share Price | $ / shares			$ 0.74	0.91	0.91
Consultants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 0.75	$ 0.75
Number of Shares Per Unit				1	1
Number of Warrants Per Unit				1	1
Deferred Compensation, Converted to Units, Amount | $					$ 60,178
Deferred Compensation Converted to Units, Shares					120,356
Deferred Compensation Converted to Units, Price Per Unit | $ / shares				$ 0.50	$ 0.50
Class of Warrant or Right, Outstanding				60,178	60,178
Consultants [Member] | Warrants Related to the Conversion of Deferred Compensation Into Units [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right				0.5	0.5
Chief Executive Officer [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares				$ 0.75	$ 0.75
Number of Shares Per Unit				1	1
Number of Warrants Per Unit				1	1
Deferred Compensation, Converted to Units, Amount | $					$ 70,000
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right				0.5	0.5
Debt Conversion, Original Debt, Amount | $					$ 18,000
Accounts Payable, Converted to Units, Amount | $					$ 65,540
Deferred Compensation, Loan Payable, and Accounts Payable Converted to Units, Shares					307,080
Deferred Compensation, Loan Payable, and Accounts Payable Converted to Units, Price Per Unit | $ / shares				$ 0.50	$ 0.50
Class of Warrant or Right, Number for Which Expiration Date Extended			1,765,000
Modification of Warrants | $			$ 88,250
Chief Executive Officer [Member] | Secured Promissory Note, Consideration for Warrants Expiring on December 31, 2025 [Member]
Financing Receivable, after Allowance for Credit Loss, Total | $			$ 300,000			$ 300,000
Financing Receivable, Interest Rate, Stated Percentage			4.00%
Interest Receivable | $			$ 10,948
Chief Executive Officer [Member] | Warrants Expiring on December 31, 2025 [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.60			$ 0.60
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			3,000,000			3,000,000
Chief Executive Officer [Member] | Stock Option Held by Employees and Consultants [Member]
Share-based Payment Arrangement, Noncash Expense, Total | $					$ 119,350
President [Member]
Number of Shares Per Unit			1
Number of Warrants Per Unit			1
Deferred Compensation, Converted to Units, Amount | $			$ 87,063
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right			0.5
Accounts Payable, Converted to Units, Amount | $			$ 12,937
Deferred Compensation, Loan Payable, and Accounts Payable Converted to Units, Price Per Unit | $ / shares			$ 0.50
Deferred Compensation and Accounts Payable Converted to Units, Shares			200,000
Class of Warrant or Right, Number for Which Expiration Date Extended			3,104,010
Modification of Warrants | $			$ 68,758
President [Member] | Secured Promissory Note, Consideration for Warrants Expiring on December 31, 2025 [Member]
Interest Receivable | $			1,095
President [Member] | Secured Promissory Note, Consideration for Warrants Expiring on December 31, 2023 [Member]
Financing Receivable, after Allowance for Credit Loss, Total | $			$ 30,000
Financing Receivable, Interest Rate, Stated Percentage			4.00%
Interest Receivable | $			$ 1,095
Debt Instrument, Collateral Amount | $			$ 30,000
President [Member] | Warrants Related to the Conversion of Deferred Compensation and Accounts Payable into Units [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.75
President [Member] | Warrants Expiring on December 31, 2023 [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.60
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			300,000
Execution Bonus as Percentage of Exercised Options and Warrants			75.00%
President [Member] | Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Plan Modification, Incremental Cost | $			$ 222,300
President [Member] | Stock Option Held by Employees and Consultants [Member]
Share-based Payment Arrangement, Noncash Expense, Total | $					$ 68,000
Consultant [Member]
Class of Warrant or Right, Issued During Period		125,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights			125,000
Class of Warrant or Right, Issued During the Period, Value Issued for Expenses | $			$ 6,250
Consultant [Member] | Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 0.74
Consultant [Member] | Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares			$ 1.20
Centerpoint [Member]
Shares Held by Subsidiaries			704,309
Series B Preferred Stock [Member]
Preferred Stock, Shares Outstanding, Ending Balance	200		200	200	200
Preferred Stock, Par or Stated Value Per Share | $ / shares	$ 0.01		$ 0.01	$ 0.01	$ 0.01
Preferred Stock, Convertible Option Per Share | $ / shares	$ 2
Preferred Stock, Dividend Rate, Percentage	2.50%
Preferred Stock, Redemption Price Per Share | $ / shares	$ 100
Convertible Preferred Stock Redemption Period	3 years
Dividends, Preferred Stock, Total | $			$ 2,000		$ 2,000
Dividends Payable | $			$ 16,000