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Note 5 - Stockholders' Equity (Deficit) (Details Textual) - USD ($)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2018
Dec. 31, 2016
Dec. 31, 2021
Common Stock, Shares Authorized (in shares) 50,000,000   50,000,000       50,000,000
Common Stock, Par or Stated Value Per Share (in dollars per share) $ 0.00001   $ 0.00001       $ 0.00001
Share-Based Payment Arrangement, Expense $ 942,600 $ 2,193,869 $ 2,121,888 $ 5,961,543      
Stock Issued During Period, Shares, Issued for Services (in shares)     13,000        
Stock Issued During Period, Value, Issued for Services   249,980 $ 44,200 $ 249,980      
Share-Based Payment Arrangement, Option [Member]              
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)     0 0      
Restricted Stock Units (RSUs) [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     478,000        
Compensation Expense, Excluding Cost of Good and Service Sold 942,600 $ 1,939,736 $ 2,121,888 $ 5,700,793      
Share-Based Payment Arrangement, Nonvested Award, Excluding Option, Cost Not yet Recognized, Amount $ 5,353,131   $ 5,353,131        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)     3 years 1 month 6 days        
Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Employee [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)     478,000        
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     4 years        
Long-term Incentive Performance Award [Member]              
Share-Based Compensation Arrangement by Share-Based Payment Award, Fixed Monetary Amount Granted     $ 250,000        
Share-Based Payment Arrangement, Expense     $ 0        
The 2016 Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award Plan, Expiration Period (Year)           10 years  
The 2018 Incentive Plan [Member]              
Share-based Compensation Arrangement by Share-based Payment Award Plan, Expiration Period (Year)         10 years