Quarterly report pursuant to Section 13 or 15(d)

Note 14 - Related Party Transactions (Details Textual)

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Note 14 - Related Party Transactions (Details Textual) - Stellartech Research Corporation [Member] - USD ($)
3 Months Ended 6 Months Ended 129 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Dec. 31, 2019
Stock Issued During Period, Shares, New Issues (in shares)         375  
Related Party Transaction, Amounts of Transaction $ 467,000 $ 1,820,000 $ 749,000 $ 3,132,000    
Accounts Payable, Related Parties, Current $ 165,000   $ 165,000   $ 165,000 $ 124,000