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8. STOCKHOLDERS’ EQUITY AND SHARE-BASED COMPENSATION (Details 2)
12 Months Ended
Dec. 31, 2018
$ / shares
Forfeiture rate 0.00%
Expected dividend yield 0.00%
Weighted-average fair value of options granted $ 0.72
Minimum  
Expected stock price volatility 47.00%
Risk-free interest rate 2.67%
Expected life of options - years 2 years 9 months
Maximum  
Expected stock price volatility 49.00%
Risk-free interest rate 2.99%
Expected life of options - years 5 years