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Note 6 - Change in Fair Value of Derivative Liabilities (Details) - USD ($)
12 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Balance $ 0  
Addition of derivative obligation at fair value on date of issuance 4,282,000  
Reclassification of derivative obligation for exercised warrants (58,000)
Extinguishment of derivative obligation (159,000)  
Change in fair value of derivative obligation (3,395,000)
Balance $ 670,000 $ 0