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Stock-based Compensation, Warrants and Shares Reserved (Details Narrative)
3 Months Ended 6 Months Ended
Jan. 02, 2021
shares
Jun. 30, 2021
USD ($)
shares
Jun. 30, 2020
USD ($)
Jun. 30, 2021
USD ($)
d
$ / shares
shares
Jun. 30, 2020
USD ($)
Dec. 31, 2020
USD ($)
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Compensation expenses       $ 1,677,841 $ 2,333,719  
Number of stock options outstanding | shares   6,113,866   6,113,866   6,508,296
Agrregate intrinsic value   $ 0   $ 0   $ 0
Number of stock options exercisable | shares   6,108,933   6,108,933   6,397,703
Options exercisable, aggregate intrinsic value   $ 0   $ 0   $ 0
Share-based Payment Arrangement, Option [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Compensation expenses   5,000 $ 292,000 147,000 722,000  
Restricted Stock Units (RSUs) [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Compensation expenses   793,000 $ 823,000 1,531,000 $ 1,612,000  
Unrecognized stock compensation   $ 2,980,000   $ 2,980,000    
Period for recognition       1 year 8 months 4 days    
Equity Incentive Plan 2020 [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized | shares           2,000,000
Increase in shares reserved, percentage       5.00%    
Minimum closing price per share requirement for plan awards | $ / shares       $ 3.00    
Threshold consecutive trading days | d       10    
Number of additional shares authorized | shares 4,692,103