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10. SHAREHOLDERS' EQUITY (Details 1) - $ / shares
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Outstanding Options 132,500 132,500 77,500
Average Weighted Remaining Contractual Life in Years, Outstanding 3 years 7 months 20 days    
$ 0.80      
Outstanding Options 27,500    
Average Weighted Remaining Contractual Life in Years, Outstanding 3 years 10 months 6 days    
Exercisable Options 27,500    
Weighted Average Exercise Price, Exercisable $ 0.80    
$ 0.88      
Outstanding Options 31,250    
Average Weighted Remaining Contractual Life in Years, Outstanding 2 years 9 months 4 days    
Exercisable Options 31,250    
Weighted Average Exercise Price, Exercisable $ 0.88    
$ 0.96      
Outstanding Options 25,000    
Average Weighted Remaining Contractual Life in Years, Outstanding 2 years 9 months 7 days    
Exercisable Options 25,000    
Weighted Average Exercise Price, Exercisable $ 0.96    
$ 2.16      
Outstanding Options 5,000    
Average Weighted Remaining Contractual Life in Years, Outstanding 3 years 9 months 4 days    
Exercisable Options 5,000    
Weighted Average Exercise Price, Exercisable $ 2.16    
$ 4.40      
Outstanding Options 12,500    
Average Weighted Remaining Contractual Life in Years, Outstanding 4 years 10 months 6 days    
Exercisable Options 12,500    
Weighted Average Exercise Price, Exercisable $ 4.40    
$ 7.06      
Outstanding Options 31,250    
Average Weighted Remaining Contractual Life in Years, Outstanding 4 years 6 months    
Exercisable Options 31,250    
Weighted Average Exercise Price, Exercisable $ 7.06