XML 71 R61.htm IDEA: XBRL DOCUMENT v3.22.1
STOCK-BASED COMPENSATION - Share-based Payment Arrangement, Option, Activity (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Nov. 19, 2018
Sep. 05, 2018
Mar. 31, 2022
Dec. 31, 2021
Number of Options        
Outstanding, beginning balance (in shares)     16,370,673  
Granted (in shares)     283,608  
Exercised (in shares) (220,000) (825,000) (1,346,038)  
Forfeited (in shares)     (208,288)  
Cancelled (in shares)     (11,478)  
Outstanding, ending balance (in shares)     15,088,477 16,370,673
Vested and exercisable at end of period (in shares)     7,407,011  
Amount expected to vest at end of period (in shares)     7,681,466  
Weighted-Average Exercise Price        
Outstanding, beginning balance (in dollars per share)     $ 4.23  
Granted (in dollars per share)     10.92  
Exercised (in dollars per share)     1.09  
Forfeited (in dollars per share)     4.69  
Cancelled (in dollars per share)     3.37  
Outstanding, ending balance (in dollars per share)     4.63 $ 4.23
Vested and exercisable at end of period (in dollars per share)     2.92  
Amount expected to vest at end of period (in dollars per share)     $ 6.28  
Weighted-Average Remaining Contractual Term (in years)        
Outstanding     7 years 1 month 9 days 7 years 8 months 12 days
Vested and exercisable at end of period     5 years 8 months 1 day  
Amount expected to vest at end of period     7 years 10 months 28 days  
Aggregate Intrinsic Value (in thousands)        
Outstanding, beginning of period     $ 177,593  
Granted      
Exercised     8,629  
Forfeited      
Cancelled      
Outstanding, end of period     31,231 $ 177,593
Vested and exercisable at end of period     23,316  
Amount expected to vest at end of period     $ 31,231