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10. SHAREHOLDERS' EQUITY (Details 1) - $ / shares
3 Months Ended
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Outstanding option, number 830,000 620,000 320,000
Average weighted remaining contractual life in years, option 4 years 3 months 11 days    
Exercisable options, number 830,000    
Weighted average exercise price, exercisable options $ 0.17    
0.05 Range      
Outstanding option, number 20,000    
Average weighted remaining contractual life in years, option 9 months 7 days    
Exercisable options, number 20,000    
Weighted average exercise price, exercisable options $ 0.05    
0.10 Range      
Outstanding option, number 220,000    
Average weighted remaining contractual life in years, option 4 years 10 months 6 days    
Exercisable options, number 220,000    
Weighted average exercise price, exercisable options $ 0.1    
0.11 Range      
Outstanding option, number 250,000    
Average weighted remaining contractual life in years, option 3 years 9 months 4 days    
Exercisable options, number 250,000    
Weighted average exercise price, exercisable options $ 0.11    
0.12 Range      
Outstanding option, number 200,000    
Average weighted remaining contractual life in years, option 3 years 9 months 7 days    
Exercisable options, number 200,000    
Weighted average exercise price, exercisable options $ 0.12    
0.27 Range      
Outstanding option, number 40,000    
Average weighted remaining contractual life in years, option 4 years 9 months 4 days    
Exercisable options, number 40,000    
Weighted average exercise price, exercisable options $ 0.27    
0.55 Range      
Outstanding option, number 100,000    
Average weighted remaining contractual life in years, option 5 years 10 months 6 days    
Exercisable options, number 100,000    
Weighted average exercise price, exercisable options $ 0.55