Note 2 - Restatement Related to Quarter Ended September 30, 2018 Summary of Restatements (Details) - USD ($)	3 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Jun. 30, 2018
Change in fair value of derivative liabilities	$ (134,885)	$ 73,291
Income (loss) before provision for income taxes	(400,057)	(1,126,523)
Net (loss)	(409,223)	(1,126,523)
Net loss available to common shareholders after preferred stock dividends	$ (494,938)	$ (1,211,073)
Loss per share - basic (in dollars per share)	$ (0.07)	$ (0.17)
Loss per share - diluted (in dollars per share)	$ (0.07)	$ (0.17)
Related parties - notes payable - current			$ 3,049,651
Related parties - notes payable - noncurrent	3,113,618
Derivative liabilities	440,736		1,323,625
Derivative liabilities - related party notes payable	560,116
Total current liabilities	5,531,328		10,351,700
Retained earnings	(45,184,300)		$ (44,689,362)
Derivative Liabilities, Warrants and Related Party Notes Payable [Member]
Derivative liabilities
Derivative Financial Instruments, Warrants [Member]
Derivative liabilities	440,736
Previously Reported [Member]
Change in fair value of derivative liabilities	50,966
Income (loss) before provision for income taxes	(214,206)
Net (loss)	(223,372)
Net loss available to common shareholders after preferred stock dividends	$ (309,087)
Loss per share - basic (in dollars per share)	$ (0.04)
Loss per share - diluted (in dollars per share)	$ (0.04)
Related parties - notes payable - current	$ 1,698,169
Related parties - notes payable - noncurrent	1,415,449
Derivative liabilities - related party notes payable
Total current liabilities	7,603,762
Retained earnings	(44,998,449)
Previously Reported [Member] | Derivative Liabilities, Warrants and Related Party Notes Payable [Member]
Derivative liabilities	815,001
Previously Reported [Member] | Derivative Financial Instruments, Warrants [Member]
Derivative liabilities
Restatement Adjustment [Member]
Change in fair value of derivative liabilities	(185,851)
Income (loss) before provision for income taxes	(185,851)
Net (loss)	(185,851)
Net loss available to common shareholders after preferred stock dividends	$ (185,851)
Loss per share - basic (in dollars per share)	$ (0.03)
Loss per share - diluted (in dollars per share)	$ (0.03)
Related parties - notes payable - current	$ (1,698,169)
Related parties - notes payable - noncurrent	1,698,169
Derivative liabilities - related party notes payable	560,116
Total current liabilities	(2,072,434)
Retained earnings	(185,851)
Restatement Adjustment [Member] | Derivative Liabilities, Warrants and Related Party Notes Payable [Member]
Derivative liabilities	(815,001)
Restatement Adjustment [Member] | Derivative Financial Instruments, Warrants [Member]
Derivative liabilities	$ 440,736