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Commitments (Schedule of Aggregate Future Payments for Purchase Commitments) (Details)
$ in Thousands
Dec. 30, 2017
USD ($)
Unrecorded Unconditional Purchase Obligation, Fiscal Year Maturity [Abstract]  
2018 $ 76,861
2019 47,587
2020 17,250
2021 5,490
2022 4,410
2023 and thereafter 22,504
Total $ 174,102