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13. STOCK-BASED COMPENSATION (Details 1) - $ / shares
9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Share-based Payment Arrangement [Abstract]    
Outstanding 705,500 2,518,000
Range of exercise prices, lower limit $ .71  
Range of exercise prices, upper limit $ 2.10  
Weighted average remaining contractual life (years) 1 year 8 months 27 days