Quarterly report pursuant to Section 13 or 15(d)

STOCK-BASED COMPENSATION - Summary of Stock Option Activity (Details)

v3.22.1
STOCK-BASED COMPENSATION - Summary of Stock Option Activity (Details)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2022
USD ($)
$ / shares
shares
No. of Options  
Beginning balance outstanding (shares) | shares 14,749
Granted (shares) | shares 0
Exercised (shares) | shares (113)
Forfeited (shares) | shares (85)
Expired (shares) | shares (64)
Ending balance outstanding (shares) | shares 14,487
Unvested (shares) | shares 3,141
Exercisable (shares) | shares 11,346
Weighted-Average Exercise Price  
Beginning balance outstanding (USD per share) | $ / shares $ 0.85
Granted (USD per share) | $ / shares 0
Exercised (USD per share) | $ / shares 1.15
Forfeited (USD per share) | $ / shares 2.06
Expired (USD per share) | $ / shares 1.74
Ending balance outstanding (USD per share) | $ / shares 0.84
Unvested (USD per share) | $ / shares 0.85
Exercisable (USD per share) | $ / shares $ 0.83
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]  
Outstanding - Weighted-Average Remaining Term (in Years) 6 years
Unvested - Weighted-Average Remaining Term (in Years) 7 years 3 months 18 days
Exercisable - Weighted-Average Remaining Term (in Years) 5 years 7 months 6 days
Outstanding - Aggregate Intrinsic Value | $ $ 58,490
Unvested - Aggregate Intrinsic Value | $ 12,803
Exercisable - Aggregate Intrinsic Value | $ $ 45,687