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Note 13 - Stock Based Compensation (Details Textual) - USD ($)
3 Months Ended
May 16, 2019
Jan. 13, 2019
Jun. 27, 2018
May 09, 2018
Apr. 12, 2018
May 18, 2016
Mar. 31, 2020
Jun. 30, 2019
Mar. 31, 2019
Sep. 28, 2010
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)                  
Share-based Payment Arrangement, Expense             $ 687,752   $ 275,833  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)                  
Adjustments to Additional Paid in Capital, Transfer of Stock-based Compensation Liability Upon Option Cancellation   $ 3,151,944             $ 3,151,944  
The 2010 Stock Option and Incentive Plan [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares) 3,600,000                  
Share-based Payment Arrangement, Option [Member] | The 2010 Stock Option and Incentive Plan [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in shares)                   5,556
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized (in shares)       125,000 500,000 11,111        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)             0   0  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares)             0   0  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares)             676,669      
Share-based Payment Arrangement, Expense             $ 687,752   $ 275,833  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares, Ending Balance (in shares)             476,383      
Share-based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount             $ 953,046      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)             215 days      
Liability Options [Member]                    
Share-based Payment Arrangement, Expense   $ 1,741,919             $ 1,741,919  
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)     $ 1              
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)     2019 years              
Liability Options [Member] | Chief Executive Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)     2,300,000              
Liability Options [Member] | Chief Financial Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)     700,000              
The 2019 Options [Member[                    
Share-based Payment Arrangement, Expense               $ 4,959,277    
Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)   $ 1.36                
The 2019 Options [Member[ | Chief Executive Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   2,300,000                
The 2019 Options [Member[ | Chief Financial Officer [Member]                    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross (in shares)   800,000