Current report filing

Stock-Based Compensation - Stock Option Activity (Details)

v3.21.2
Stock-Based Compensation - Stock Option Activity (Details) - Stock Option - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding      
Beginning balance (shares) 2,374,357 2,941,154 2,715,170
Granted (shares)     241,316
Exercised (shares) (43,250) (492,498) (15,332)
Forfeited (shares) (157,776) (74,299)  
Ending balance (shares) 2,173,331 2,374,357 2,941,154
Exercisable (shares) 1,796,519    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price      
Beginning balance (weighted average exercise price, usd per share) $ 11.44 $ 10.79 $ 10.18
Granted (weighted average exercise price, usd per share)     17.50
Exercised (weighted average exercise price, usd per share) 8.64 8.07 8.51
Forfeited (weighted average exercise price, usd per share) 9.23 8.16  
Ending balance (weighted average exercise price, usd per share) 9.84 $ 11.44 $ 10.79
Exercisable (weighted average exercise price, usd per share) $ 10.50    
Outstanding (weighted average contractual term) 5 years 11 months 8 days    
Outstanding (aggregate intrinsic value) $ 10,452    
Exercisable (weighted average contractual term) 6 years    
Exercisable (aggregate intrinsic value) $ 7,611    
Expiration period 10 years