Acquisitions (Narrative) (Details) $ in Thousands	3 Months Ended
Jun. 27, 2020 property	Jun. 29, 2019 USD ($) store warehouse
Business Acquisition [Line Items]
Store acquisitions related to acquisition growth strategy \| property	5
Total consideration transferred		$ 54,100
Costs related to completed acquisitions		500
Sales for acquired entities		$ 7,100
Maximum [Member]
Business Acquisition [Line Items]
Store acquisitions related to greenfield store growth strategy \| property	4
Minimum [Member]
Business Acquisition [Line Items]
Store acquisitions related to greenfield store growth strategy \| property	1
BAW LLC [Member]
Business Acquisition [Line Items]
Acquisition date	Jun. 23, 2019
Number of stores acquired \| store		2
Certified Tire And Service Centers, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date	May 19, 2019
Number of stores acquired \| store		40
Number of distribution centers acquired \| warehouse		1
Allied Discount Tire And Brake, Inc [Member]
Business Acquisition [Line Items]
Acquisition date	Mar. 31, 2019
Number of stores acquired \| store		12
Fiscal 2020 Acquisitions [Member]
Business Acquisition [Line Items]
Total consideration transferred		$ 54,093

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The number of stores acquired and operating by the entity during the period.

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Store acquisitions related to acquisition growth strategy

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Date when the acquirer obtains control of the acquiree, in CCYY-MM-DD format.

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