v3.22.2.2
Summary of Performance Based Restricted Stock Units (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Mar. 15, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Share-based Compensation Arrangement by Award [Line Items]          
Percentage of total units vested       100.00%  
Performance Based Shares          
Share-based Compensation Arrangement by Award [Line Items]          
Balance at Beginning of Period (in shares)       215,807  
Granted (in shares)       66,909  
Vested (in shares)       (80,475)  
Forfeited (in shares)       (2,261)  
Balance at End of Period (in shares)   199,980   199,980  
Share-based compensation expense   $ 0.4 $ 2.3 $ 4.9 $ 6.7
Share-based compensation not yet recognized   $ 9.0   $ 9.0  
Share-based compensation not yet recognized, period for recognition       1 year 8 months 12 days  
Performance vesting period       3 years  
Percentage of total units vested 200.00%        
2019 Grant | Performance Based Shares          
Share-based Compensation Arrangement by Award [Line Items]          
Balance at Beginning of Period (in shares)       81,242  
Vested (in shares)       (80,475)  
Forfeited (in shares)       (767)  
Balance at End of Period (in shares)   0   0  
Weighted average grant date fair value (in dollars per share)   $ 56.49   $ 56.49  
2020 Grant | Performance Based Shares          
Share-based Compensation Arrangement by Award [Line Items]          
Balance at Beginning of Period (in shares)       88,538  
Forfeited (in shares)       (1,494)  
Balance at End of Period (in shares)   87,044   87,044  
Weighted average grant date fair value (in dollars per share)   $ 59.81   $ 59.81  
Percentage of total units vested       200.00%  
2021 Grant | Performance Based Shares          
Share-based Compensation Arrangement by Award [Line Items]          
Balance at Beginning of Period (in shares)       46,027  
Balance at End of Period (in shares)   46,027   46,027  
Weighted average grant date fair value (in dollars per share)   $ 141.00   $ 141.00  
Percentage of total units vested       153.00%  
2022 Grant | Performance Based Shares          
Share-based Compensation Arrangement by Award [Line Items]          
Granted (in shares)       66,909  
Balance at End of Period (in shares)   66,909   66,909  
Weighted average grant date fair value (in dollars per share)   $ 118.80   $ 118.80  
Percentage of total units vested       50.00%  
Minimum | Performance Based Shares          
Share-based Compensation Arrangement by Award [Line Items]          
Percentage of total units vested       0.00%  
Maximum | Performance Based Shares          
Share-based Compensation Arrangement by Award [Line Items]          
Percentage of total units vested       200.00%