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Long-term Debt Maturities of LT Debt (Details)
$ in Thousands
Dec. 30, 2017
USD ($)
Debt Disclosure [Abstract]  
Held-to-maturity Securities, Debt Maturities, Next Twelve Months, Fair Value $ 449
Long-term Debt, Maturities, Repayments of Principal in Year Four 518
Long-term Debt, Maturities, Repayments of Principal in Year Three 492
Long-term Debt, Maturities, Repayments of Principal in Year Two 471
Long-term Debt, Maturities, Repayments of Principal in Year Five $ 543