Annual report pursuant to Section 13 and 15(d)

Compensation and Other Benefit Plans - Performance-based stock options (Details)

v3.20.4
Compensation and Other Benefit Plans - Performance-based stock options (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Share-based compensation    
Stock-based compensation expense $ 3,961 $ 4,948
Unrecognized compensation expense related to stock options (in dollars) $ 3,600  
Stock Options Vesting Based On Performance    
Share-based compensation    
Number of options outstanding, non-vested options 0 41,250
Grant date fair value   $ 200
Stock-based compensation expense   $ 200
Unrecognized compensation expense related to stock options (in dollars) $ 0