XML 72 R60.htm IDEA: XBRL DOCUMENT v3.21.2
Share-Based Compensation (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 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) 1,307,945   1,307,945    
Cash used to settle liabilities     $ 300,000 $ 300,000  
Costs for share-based payment arrangements $ 2,600,000 $ 3,800,000 5,000,000.0 $ 8,300,000  
Unamortized share-based compensation expense 13,800,000   $ 13,800,000    
Weighted average period over which unrecognized compensation cost is expected to be recognized     2 years 2 months 12 days    
Restricted Stock Units          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Units granted (in shares)     280,000 75,000  
Weighted-average fair values per share (in dollars per share)     $ 18.59 $ 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  
Restricted Stock Units, Guaranteed Minimum Payouts          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Liabilities recognized for restricted stock grants $ 2,900,000   $ 2,900,000   $ 2,400,000