Annual report pursuant to Section 13 and 15(d)

Note 15 - Related Party Transactions (Details Textual)

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Note 15 - Related Party Transactions (Details Textual) - Stellartech Research Corporation [Member] - USD ($)
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Stock Issued During Period, Shares, New Issues (in shares) 38  
Related Party Transaction, Amounts of Transaction $ 1,051,000 $ 4,889,000