Quarterly report pursuant to Section 13 or 15(d)

Note 7 - Related Party Receivable (Details Textual)

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Note 7 - Related Party Receivable (Details Textual) - Chief Scientific Officer [Member] - Repayment Agreement of Improperly Expense Reimbursement [Member] - USD ($)
6 Months Ended 12 Months Ended
Aug. 10, 2016
Jun. 30, 2017
Dec. 31, 2016
Due from Related Parties, Term 6 years    
Due from Related Parties $ 658,000 $ 558,000  
Nonoperating Gain (Loss), Related Party Settlement     $ 459,000
Due from Related Party, Annual Installments   $ 100,000