Impairment of Long-Lived Assets, Discontinued Operations, Property Held for Sale and Store Closings - Assets and Liabilities for All Discontinued Operations (Details) - USD ($) $ in Thousands	Mar. 13, 2019	Aug. 29, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets related to discontinued operations—non-current	$ 1,813	$ 1,813
Liabilities related to discontinued operations—current	4	14
Liabilities related to discontinued operations—non-current	16	16
Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property and equipment	1,813	1,813
Assets related to discontinued operations—non-current	1,813	1,813
Accrued expenses and other liabilities	4	14
Liabilities related to discontinued operations—current	4	14
Other liabilities	16	16
Liabilities related to discontinued operations—non-current	$ 16	$ 16

Amount classified as accrued liabilities attributable to disposal group held for sale or disposed of, expected to be disposed of within one year or the normal operating cycle, if longer.

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