Description of Business (Details)	9 Months Ended	12 Months Ended
Jul. 03, 2016 Segment	Sep. 27, 2015 Segment State Store
Entity Location [Line Items]
Number of Years Existence		37 years
Number of Stores		431
Number of States in which Entity Operates \| State		42
Number of Operating Segments \| Segment	1	1
Number of Reportable Segments \| Segment	1	1
United States [Member]
Entity Location [Line Items]
Number of Stores		412
Canada [Member]
Entity Location [Line Items]
Number of Stores		10
United Kingdom [Member]
Entity Location [Line Items]
Number of Stores		9

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration