Impairment of Long-Lived Assets, Discontinued Operations, Property Held for Sale and Store Closings - Discontinued Operations (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
Mar. 14, 2018	Mar. 15, 2017	Mar. 14, 2018	Mar. 15, 2017
Discontinued Operations and Disposal Groups [Abstract]
Discontinued operating loss			$ (8)	$ (12)
Pretax loss			(8)	(12)
Income tax expense from discontinued operations			(138)	(403)
Loss from discontinued operations, net of income taxes	$ (111)	$ (343)	$ (146)	$ (415)
Effect on EPS from discontinued operations—basic (in dollars per share)	$ 0.00	$ (0.01)	$ (0.01)	$ (0.02)

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

Amount after tax of income (loss) from a discontinued operation including the portion attributable to the noncontrolling interest. Includes, but is not limited to, the income (loss) from operations during the phase-out period, gain (loss) on disposal, gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and adjustments to a prior period gain (loss) on disposal.

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