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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 |  |

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