XML 154 R137.htm IDEA: XBRL DOCUMENT v3.22.0.1
Stock-Based Compensation (Textuals) (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Common Stock, Capital Shares Reserved for Future Issuance 0.2    
Shares available for future issuance 1.5    
Payout Percentage 100.00%    
Maximum [Member]      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Potential increase for payout percentage 200.00%    
Performance Shares [Member]      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Award service period 3 years    
Payout Percentage 100.00% 132.70% 157.20%
Total unrecognized compensation cost $ 15.7    
Estimated forfeiture rate 30.30%    
Restricted Stock Units [Member]      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Award service period 3 years    
Total unrecognized compensation cost $ 22.0    
Estimated forfeiture rate 21.80%    
Stock Appreciation Rights (SARs) [Member]      
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]      
Total unrecognized compensation cost $ 8.2    
Weighted average period of recognition 2 years 4 months 24 days    
Estimated forfeiture rate 20.00%    
Award expiration period 7 years