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Subsequent Events (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 9 Months Ended
Oct. 30, 2020
Oct. 23, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Subsequent Event [Line Items]            
Cash dividends declared per common share (in dollars per share)     $ 0.23 $ 0.23 $ 0.69 $ 0.68
Remaining borrowing capacity     $ 227.5   $ 227.5  
Revolving Credit Facility | Credit Facility            
Subsequent Event [Line Items]            
Repayment of credit facility     75.0      
Remaining borrowing capacity     $ 75.0   $ 75.0  
Subsequent Event            
Subsequent Event [Line Items]            
Cash dividends declared per common share (in dollars per share)   $ 0.23        
Dividends   $ 10.0        
Subsequent Event | Revolving Credit Facility | Credit Facility            
Subsequent Event [Line Items]            
Repayment of credit facility $ 25.0