XML 59 R48.htm IDEA: XBRL DOCUMENT v3.21.2
Stock-Based Compensation (Details)
6 Months Ended
Jun. 30, 2021
plan
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of equity compensation plans (plan) | plan 2
Long-Term Incentive Plan | Time Vested Stock Awards  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares granted (in shares) | shares 57,196
Shares granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 66.80
Shares vested (in shares) | shares 87,584
Shares vested, weighted average grant date fair value (in dollars per share) | $ / shares $ 29.20
Long-Term Incentive Plan | Time Vested Stock Awards | Employees  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 3 years
Service period 3 years
Long-Term Incentive Plan | Time Vested Stock Awards | Non-employee Directors  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Award vesting period 1 year
Long-Term Incentive Plan | Performance Awards | Employees  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares granted (in shares) | shares 42,091
Shares granted, weighted average grant date fair value (in dollars per share) | $ / shares $ 80.11
Service period 2 years 9 months 18 days
Long-Term Incentive Plan | Performance Awards | Employees | Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Percentage of potential target shares awarded 0.00%
Long-Term Incentive Plan | Performance Awards | Employees | Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Percentage of potential target shares awarded 200.00%
Long-Term Incentive Plan | Stock Options | Employees  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares exercised (in shares) | shares 18,640
Shares exercised, weighted average exercise price (in dollars per share) | $ / shares $ 23.02