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. 14, 2018	Aug. 30, 2017
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets related to discontinued operations—non-current	$ 2,269	$ 2,755
Liabilities related to discontinued operations—current	4	367
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	1,872	1,872
Deferred tax assets	397	883
Assets related to discontinued operations—non-current	2,269	2,755
Deferred income taxes	0	354
Accrued expenses and other liabilities	4	13
Liabilities related to discontinued operations—current	4	367
Other liabilities	16	16
Liabilities related to discontinued operations—non-current	$ 16	$ 16