XML 94 R78.htm IDEA: XBRL DOCUMENT v3.22.0.1
Stock-Based Compensation and Stock Awards - Restricted Stock Awards - Additional Information (Details) - Restricted stock awards - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Restricted stock awards compensation expense $ 8.0 $ 7.5 $ 8.6
Income tax benefit recognized 1.3 $ 1.1 $ 2.0
Unrecognized compensation expense related to share based compensation $ 5.9    
Period of recognition for unrecognized compensation expense related to nonvested stock options (in years) 2 years 10 months 24 days    
Antidilutive securities (in shares) 485,047 352,000 46,000