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10. SHARE-BASED COMPENSATION (Details 3)
12 Months Ended
Dec. 31, 2019
$ / shares
shares
Share-based Payment Arrangement [Abstract]  
Unvested service-based RSUs outstanding, beginning 0
Granted 308,087
Vested 0
Forfeited and cancelled 0
Unvested service-based RSUs outstanding, ending 308,087
Grant date fair value | $ / shares $ 6.77
Vesting period 3 years