XML 114 R100.htm IDEA: XBRL DOCUMENT v3.20.4
Stock-Based Compensation - Summary of Restricted Stock Awards Activity (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Shares      
Nonvested beginning balance (in shares) 1,031,772    
Granted (in shares) 786,006    
Vested (in shares) (610,804)    
Forfeited (in shares) (99,108)    
Nonvested ending balance (in shares) 1,107,866 1,031,772  
Weighted- Average Grant Date Fair Value Per Share      
Nonvested beginning balance (in dollars per share) $ 15.20    
Granted (in dollars per share) 15.00    
Vested (in dollars per share) 12.45    
Forfeited (in dollars per share) 15.53    
Nonvested, ending balance (in dollars per share) $ 16.58 $ 15.20  
Unrecognized compensation expense $ 1.9    
Weighted-average remaining period for recognition of unrecognized compensation costs 2 years 3 months 18 days    
Restricted stock      
Weighted- Average Grant Date Fair Value Per Share      
Granted (in dollars per share) $ 15.00 $ 23.33 $ 15.46
Unrecognized compensation expense $ 11.8    
Weighted-average remaining period for recognition of unrecognized compensation costs 1 year 10 months 24 days    
Fair of vested restricted stock $ 7.6 $ 6.8 $ 4.3