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Debt (Details) - USD ($)
Mar. 04, 2017
Sep. 13, 2016
May 28, 2016
Line of Credit Facility [Line Items]      
Long-term debt $ 234,500,000   $ 221,900,000
Borrowings on revolver and outstanding letters of credit 42,900,000   30,700,000
Revolving Line of Credit, Domestic      
Line of Credit Facility [Line Items]      
Long-term debt 34,600,000   22,000,000.0
Revolving line of credit, maximum borrowing capacity   $ 400,000,000  
Revolving line of credit, allowed increase in borrowing capacity   $ 200,000,000  
Letters of Credit Outstanding, Amount $ 8,300,000   $ 8,700,000