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STOCKHOLDERS' EQUITY (Tables)
3 Months Ended
Mar. 31, 2021
Stockholders' equity:  
Warrant activity
    Number    

Average Purchase

Price Per Share

 
Shares purchasable under outstanding warrants at December 31, 2020     3,206,910     $ 6.36  
Stock purchase warrants issued     -       -  
Stock purchase warrants exercised     -       -  
Shares purchasable under outstanding warrants at March 31, 2021     3,206,910     $ 6.36  
Stock purchase warrants
    Number of     Exercise Price    

Description

  Common Shares     Per Share  

Expiration Date

Purchase Warrants     1,661,397     $ 6.50   June 18, 2021
Agent Warrants     153,846     $ 8.125   June 18, 2021
Purchase Warrants     1,391,667     $ 6.00   June 1, 2022
      3,206,910