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Share Incentive Plan - Schedule of Nonvested Restricted Stock Units Activity (Details) - Restricted Stock Units (RSUs) - 2020 ADs Plan
12 Months Ended
Dec. 31, 2021
$ / shares
shares
Number of Shares  
Non-vested balance | shares 15,013,296
Granted | shares 6,604,356
Vested and released | shares (7,876,356)
Cancelled or forfeited | shares (653,448)
Non-vested balance | shares 13,087,848
Weighted-Average Grant-Date Fair Value  
Non-vested | $ / shares $ 0.11
Granted | $ / shares 0.14
Vested and released | $ / shares 0.11
Cancelled or forfeited | $ / shares 0.13
Non-vested | $ / shares $ 0.12