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Derivative Financial Instruments	6 Months Ended
Derivative Financial Instruments	Mar. 14, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments The Company enters into derivative instruments, from time to time, to manage its exposure to changes in interest rates on a percentage of its long-term variable rate debt. On December 14, 2016, the Company entered into an interest rate swap, pay fixed - receive floating, with a constant notional amount of $17.5 million. The fixed swap rate we pay is 1.965%, plus an applicable margin. The variable rate we receive is one-month LIBOR, plus an applicable margin. The term of the interest rate swap is 5 years. The Company does not apply hedge accounting treatment to this derivative, therefore, changes in fair value of the instrument are recognized in Other income (expense), net. The changes in the interest rate swap fair value resulted in a credit to expense of approximately $0.6 million during the two quarters ended March 14, 2018 and an expense of approximately $45 thousand in the two quarters ended March 15, 2017. The Company does not hold or use derivative instruments for trading purposes.