Indebtedness (Components of Long-term debt) (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Oct. 01, 2016
Debt Disclosure [Abstract]
U.S. revolving credit facility	$ 585,000	$ 590,000
Senior notes	300,000	300,000
Securitization program	120,000	120,000
Obligations under capital leases	417	471
Senior debt	1,005,417	1,010,471
Less deferred debt issuance cost	(4,935)	(5,457)
Less current installments	(144)	(167)
Long-term debt	$ 1,000,338	$ 1,004,847

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion. Senior note holders are paid off in full before any payments are made to junior note holders.

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