XML 107 R90.htm IDEA: XBRL DOCUMENT v3.20.4
Stock-Based Compensation and Other Benefit Plans - Restricted Stock and Restricted Stock Units- Narratives (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Restricted Stock, Time-vesting    
Share-based Compensation Arrangement by Share-based Payment Award    
Percentage by award type 53.00%  
Restricted Stock, Performance-based    
Share-based Compensation Arrangement by Share-based Payment Award    
Percentage by award type 47.00%  
Vesting period in years 3 years  
Restricted Stock    
Share-based Compensation Arrangement by Share-based Payment Award    
Fair value of vested restricted stock $ 2.1 $ 6.3
Award unrecognized compensation expense $ 1.8  
Award unrecognized compensation expense, expected period for recognition 9 months 18 days  
Granted to employees (in shares) 3,114,978 1,494,022
Restricted Stock Units (RSUs)    
Share-based Compensation Arrangement by Share-based Payment Award    
Award unrecognized compensation expense $ 2.0  
Award unrecognized compensation expense, expected period for recognition 1 year 2 months 12 days  
Awards granted (in shares)   1,100,000