XML 74 R60.htm IDEA: XBRL DOCUMENT v3.21.2
Share-Based Compensation (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Number of shares available for future grant (in shares) 1,036,709   1,036,709    
Cash used to settle liabilities     $ 300,000 $ 300,000  
Costs for share-based payment arrangements $ 3,100,000 $ 2,500,000 8,100,000 $ 10,700,000  
Unamortized share-based compensation expense 20,600,000   $ 20,600,000    
Weighted average period over which unrecognized compensation cost is expected to be recognized     2 years 1 month 6 days    
Restricted Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Units granted (in shares)     555,986 75,000  
Weighted-average fair values per share (in dollars per share)     $ 16.52 $ 13.93  
Stock Options          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Total stock options granted (in shares)     100,000 75,000  
Weighted average grant date fair value (in dollars per share)     $ 15.21 $ 3.94  
Weighted-average exercise prices (in dollars per share)     $ 19.24 $ 25.70  
Expected life     6 years 6 months    
Expected volatility (as a percent)     73.74%    
Risk-free rate     1.44%    
Expected quarterly dividends     $ 0    
Unrestricted Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Units granted (in shares)     96,668 194,177  
Weighted-average fair values per share (in dollars per share)     $ 15.62 $ 8.60  
Cash-settled Performance Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Units granted (in shares)     275,986    
Weighted-average fair values per share (in dollars per share)     $ 20.21    
Restricted Stock Units, Guaranteed Minimum Payouts          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Liabilities recognized for restricted stock grants $ 3,600,000   $ 3,600,000   $ 2,400,000