Description Of Business And Basis Of Presentation (Narrative) (Details) $ in Millions	9 Months Ended
Dec. 25, 2021 USD ($) store property item state segment	Mar. 27, 2021 USD ($)
Description Of Business And Basis Of Presentation [Abstract]
Company operated retail stores \| store	1,303
Number of states in which entity operates \| state	32
Number of franchised locations \| item	81
Number of wholesale locations	7
Number of retread facilities	3
Property and equipment accumulated depreciation \| $	$ 405.2	$ 382.7
Number of operating segments \| segment	1

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.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e8672-108599

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