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Credit Agreement (Details) - USD ($)
$ in Millions
Apr. 02, 2016
Jan. 02, 2016
Revolving credit facility    
Senior Loan Agreement    
Revolving credit facility, maximum capacity $ 125.0  
Amount of borrowings outstanding under revolving line of credit 0.0 $ 0.0
Amounts outstanding under letters of credit 2.1  
Letters of credit    
Senior Loan Agreement    
Revolving credit facility, maximum capacity $ 15.0