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13. STOCK-BASED COMPENSATION (Tables)
3 Months Ended
Mar. 31, 2020
Share-based Payment Arrangement [Abstract]  
Schedule of stock option transactions
    Number of Option
and Warrants
Outstanding and exercisable
  Weighted- Average Exercise price of Option
and Warrants
  Range of
Exercise Price per Common Share
Balance, January 1, 2020     135,100       $7.21       $3.57 - $9.90  
Exercised  during the period     -       -       -  
Expired during the period     (2,500 )     $9.90       $9.90  
Balance, March 31, 2020     132,600       $7.16       $3.57 - $9.50  
Schedule of stock and warrants options outstanding
Stock Options and Warrants Outstanding and Exercisable
                      Weighted Average  
                      Remaining  
      Outstanding at March 31, 2020      

Range of

Exercise Prices

     

Contractual Life

 (Years)

 
Outstanding and exercisable     132,600       $3.57 - $9.50       1.33