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v3.21.1

Profit Sharing, Employee Stock Ownership, Employee Stock Purchase and Pension Plans -Textual (Details) - USD ($) $ in Thousands | 12 Months Ended
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Mar. 28, 2021 | Mar. 29, 2020 | Mar. 31, 2019
Defined Contribution Plan Disclosure [Line Items] |  |  |
Multi Employer Pension Plan Withdrawal Liability Payment Over Period of Years | $ 467 |  |
Common Stock [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
ESPP shares issued (shares) | 88,148 | 77,100 | 87,356
Deferred Profit Sharing [Member] | Qualified Plan [Member] | Minimum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 2.50% | 2.50% | 2.50%
Deferred Profit Sharing [Member] | Qualified Plan [Member] | Maximum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 5.00% | 5.00% | 5.00%
Deferred Profit Sharing [Member] | Nonqualified Plan [Member] | Maximum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 10.00% | 10.00% | 10.00%
401 (k) plan [Member] | Qualified Plan [Member] | Maximum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 5.00% |  |
Employee Stock Ownership Plan (ESOP), Plan [Domain] | Qualified Plan [Member] | Minimum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 2.50% | 2.50% | 2.50%
Employee Stock Ownership Plan (ESOP), Plan [Domain] | Qualified Plan [Member] | Maximum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 5.00% | 5.00% | 5.00%
Bargaining Unit Employee Plans [Member] | Deferred Profit Sharing [Member] | Qualified Plan [Member] | Minimum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 2.50% |  |
Bargaining Unit Employee Plans [Member] | Deferred Profit Sharing [Member] | Qualified Plan [Member] | Maximum [Member] |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |
Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 5.00% |  |

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