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Share-Based Compensation - Additional Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2020
USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Unrecognized compensation cost related to all nonvested awards $ 25.0
Unrecognized compensation cost is expected to be recognized over a weighted-average period 1 year 7 months 6 days
Share-based compensation, modification of terms, incremental compensation cost $ 1.4
Share-based compensation, modification of terms, expected incremental compensation cost $ 4.4
SARs and Stock Options  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
SAR's and stock options expiration period 10 years
Restricted Shares and Units | Minimum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period 3 years
Restricted Shares and Units | Maximum  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Vesting period 5 years