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Other Information (Details) - USD ($)
$ in Thousands
Sep. 24, 2017
Sep. 25, 2016
Payables and Accruals [Abstract]    
Accrued Salaries, Current $ 12,088 $ 12,290
Accrued Employee Benefits, Current 3,374 4,135
Other Liabilities 6,961 7,459
Compensation and other accrued liabilities $ 22,423 $ 23,884