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Subsequent Event (Details) - USD ($)
$ in Millions
Sep. 13, 2016
Sep. 03, 2016
Revolving Line of Credit, Domestic    
Subsequent Event [Line Items]    
Revolving line of credit, maximum borrowing capacity   $ 250.0
Revolving line of credit, allowed increase in borrowing capacity   $ 125.0
Subsequent Event | Interest Rate Swap    
Subsequent Event [Line Items]    
Interest rate swap agreement, notional amount $ 150.0  
Amount of outstanding indebtedness converted to fixed rate in swap transaction $ 150.0  
Fixed interest rate on converted debt 1.949%  
Subsequent Event | Revolving Line of Credit, Domestic    
Subsequent Event [Line Items]    
Revolving line of credit, maximum borrowing capacity $ 400.0  
Revolving line of credit, allowed increase in borrowing capacity 200.0  
Revolving line of credit, unused borrowing capacity $ 360.1