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Note 2 - Going Concern (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Monthly Cash Requirement to Conduct Operations and Pay Dividend Obligations     $ 735,000    
Revenue from Contract with Customer, Including Assessed Tax $ 992,090 $ 307,142 2,880,728 $ 829,627  
Net Cash Provided by (Used in) Financing Activities, Total     (255,228) $ 4,683,333 $ 24,000,000
Cash and Cash Equivalents, at Carrying Value, Ending Balance $ 11,479,691   $ 11,479,691   $ 16,993,096