Acquisitions (Narrative) (Details) $ in Thousands			12 Months Ended
	Apr. 25, 2021 store	Dec. 06, 2020 USD ($) store	Mar. 27, 2021 USD ($) property	Mar. 28, 2020 USD ($) store property
Business Acquisition [Line Items]
Store acquisitions related to acquisition growth strategy | property			5
Total consideration transferred | $				$ 103,700
Costs related to completed acquisitions | $			$ 300	1,400
Sales for acquired entities | $			5,800	59,300
Net income (loss) for acquired entities | $			$ 100	$ (3,900)
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
Fred Allen Enterprises, Inc. [Member]
Business Acquisition [Line Items]
Total consideration transferred | $		$ 17,100
Number of stores acquired		17
Nevada Tire Holdings, LLC and Idaho Tire Holdings, LLC [Member]
Business Acquisition [Line Items]
Acquisition date			Nov. 17, 2019
Number of stores acquired				18
S & S Unlimited, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date			Oct. 27, 2019
Number of stores acquired				6
Lloyd’s Tire Service, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date			Oct. 27, 2019
Number of stores acquired				3
Atlas Tire Center, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date			Aug. 25, 2019
Number of stores acquired				1
LRZ3 Auto, LLC. [Member]
Business Acquisition [Line Items]
Acquisition date			Aug. 25, 2019
Number of stores acquired				2
T-Boy's Tire and Automotive, LLC. [Member]
Business Acquisition [Line Items]
Acquisition date			Aug. 25, 2019
Number of stores acquired				1
Twin Tire & Auto Care, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date			Aug. 25, 2019
Number of stores acquired				2
Twin Tire & Auto Care Team, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date			Aug. 25, 2019
Number of stores acquired				1
Scotty's Tire & Automotive, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date			Aug. 25, 2019
Number of stores acquired				1
BAW LLC [Member]
Business Acquisition [Line Items]
Acquisition date			Jun. 23, 2019
Number of stores acquired				2
Certified Tire And Service Centers, Inc. [Member]
Business Acquisition [Line Items]
Acquisition date			May 19, 2019
Number of stores acquired				40
Number of distribution centers acquired | property				1
Allied Discount Tire And Brake, Inc [Member]
Business Acquisition [Line Items]
Acquisition date			Mar. 31, 2019
Number of stores acquired				12
Mountain View Tire And Service [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Number of stores acquired	30
Fiscal 2020 Acquisitions [Member]
Business Acquisition [Line Items]
Total consideration transferred | $				$ 103,692
Fiscal 2020 Acquisitions [Member] | Customer Lists [Member]
Business Acquisition [Line Items]
Weighted average useful life			7 years
Intangible assets | $				$ 2,800
Fiscal 2021 Acquisitions [Member]
Business Acquisition [Line Items]
Total consideration transferred | $			$ 17,112
Total consideration transferred, portion in cash | $			16,300
Payable to a seller | $			$ 800
Fiscal 2021 Acquisitions [Member] | Customer Lists [Member]
Business Acquisition [Line Items]
Weighted average useful life			7 years
Intangible assets | $			$ 400