Description Of Business, Basis Of Presentation And Summary Of Significant Accounting Policies (Narrative) (Details)		12 Months Ended
	Mar. 31, 2019 USD ($)	Mar. 27, 2021 USD ($) segment property state store item	Mar. 28, 2020 USD ($)	Mar. 30, 2019 USD ($)
Significant Accounting Policies [Line Items]
Company operated stores | store		1,263
Franchised locations | property		96
Number of wholesale locations | property		7
Number of retread facilities | property		3
Number of States in which Entity Operates | state		32
Number of operating segments | segment		1
Total assets		$ 1,811,814,000	$ 2,049,457,000
Total liabilities		$ 1,062,130,000	1,315,017,000
Number of store closures | store		36
Impairment of long-lived assets		$ 144,000	6,579,000	$ 0
Number of reporting units | item		1
Impairment of intangible assets		$ 0	0	$ 0
Advertising expenses amortization period		2 months
Operating Lease ROU Assets [Member]
Significant Accounting Policies [Line Items]
Impairment of long-lived assets		$ 4,400,000
Accounting Standards Update 2016-02 [Member]
Significant Accounting Policies [Line Items]
Total assets	$ 165,300,000
Total liabilities	165,900,000
Decrease in shareholder’s equity	$ (600,000)
COVID-19 Pandemic [Member]
Significant Accounting Policies [Line Items]
Impairment of long-lived assets			$ 6,600,000
Impairment of long-lived assets, related to store closures		4,300,000
COVID-19 Pandemic [Member] | Finance Lease ROU Assets [Member]
Significant Accounting Policies [Line Items]
Impairment of long-lived assets		600,000
COVID-19 Pandemic [Member] | Leasehold Improvements And Equipment [Member]
Significant Accounting Policies [Line Items]
Impairment of long-lived assets		$ 1,600,000
Stock Options [Member]
Significant Accounting Policies [Line Items]
Options award vesting period		4 years
Senior Management [Member] | Restricted Stock [Member]
Significant Accounting Policies [Line Items]
Options award vesting period		3 years	3 years	3 years
Maximum [Member] | Stock Options [Member]
Significant Accounting Policies [Line Items]
Options award vesting period		4 years
Maximum [Member] | Restricted Stock [Member]
Significant Accounting Policies [Line Items]
Options award vesting period		4 years
Minimum [Member] | Stock Options [Member]
Significant Accounting Policies [Line Items]
Options award vesting period		3 years
Minimum [Member] | Restricted Stock [Member]
Significant Accounting Policies [Line Items]
Options award vesting period		3 years