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11. SHAREHOLDERS' EQUITY (Details 2) - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Stockholders' Equity:    
Outstanding, Beginning Balance 17,240,523 26,550,611
Granted 1,671,667 1,300,000
Exercised (298,850) 0
Expired (4,916,665) (10,610,088)
Outstanding, Ending Balance 13,696,675 17,240,523
Weighted Average Exercise Price    
Outstanding, Beginning Balance $ 0.39 $ 0.34
Granted 0.17 0.11
Exercised (0.40) 0.00
Expired (0.80) (0.23)
Outstanding, Ending Balance $ 0.22 $ 0.39