XML 112 R64.htm IDEA: XBRL DOCUMENT v3.20.4
STOCK BASED COMPENSATION - Summary Of Stock Options Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Number of Shares    
Beginning balance (in shares) 462,011  
Exercised (in shares) (81,026)  
Canceled (in shares) (1,000)  
Ending balance (in shares) 379,985 462,011
Exercisable (in shares) 379,985  
Vested and expected to vest (in shares) 379,985  
Weighted Average Exercise Price    
Beginning balance (in dollars per share) $ 13.90  
Exercised (in dollars per share) 8.70  
Canceled (in dollars per share) 0.50  
Ending balance (in dollars per share) 15.10 $ 13.90
Exercisable (in dollars per share) 15.10  
Vested and expected to vest (in dollars per share) $ 15.10  
Balance (in years) 3 years 2 months 12 days 4 years
Exercisable (in years) 3 years 2 months 12 days  
Vested and expected to vest ( in years) 3 years 2 months 12 days  
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Aggregate Intrinsic Value [Roll Forward]    
Aggregate intrinsic value, beginning balance $ 20  
Aggregate intrinsic value, ending balance 25 $ 20
Aggregate Intrinsic Value, exercisable 25  
Aggregate Intrinsic Value, vested and expected to vest $ 25