Quarterly report pursuant to Section 13 or 15(d)

SHARE-BASED COMPENSATION - Weighted-average Assumptions (Details)

v3.21.1
SHARE-BASED COMPENSATION - Weighted-average Assumptions (Details)
3 Months Ended
Mar. 31, 2021
$ / shares
Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected dividend yield 0.00%
Expected volatility 90.00%
Market-based Restricted Share Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Grant date share price $ 14.40
Risk-free interest rate 0.50%
Expected dividend yield 0.00%
Expected volatility 90.00%
Minimum | Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term 5 years
Risk-free interest rate 0.78%
Minimum | Market-based Restricted Share Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term 1 year 9 months 18 days
Maximum | Stock options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term 6 years 3 months
Risk-free interest rate 1.02%
Maximum | Market-based Restricted Share Units  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Expected term 3 years 9 months 18 days