Impairment Charges and Store Closing Costs (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Aug. 26, 2017	Aug. 27, 2016	Aug. 26, 2017	Aug. 27, 2016
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Impairment charges and store closing costs	$ 2,335	$ 182	$ 4,493	$ 182
Store closing costs			200
Obsolete store fixtures
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]
Impairment charges and store closing costs	$ 2,300		$ 4,300

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=68055307&loc=d3e2420-110228

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration