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Retirement Plans - Narrative (Details) £ in Thousands, $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Jun. 25, 2021 USD ($) | Jun. 26, 2020 USD ($) | Jun. 25, 2021 GBP (£) | Mar. 26, 2021 USD ($) | Mar. 26, 2021 GBP (£)
Pension Plan |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Company contributions | $ 353 | $ 240 |  |  |
Expected contributions in current fiscal year | $ 943 |  |  |  |
Other Defined Benefit Plans | Pension Promise |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Retirement age | 65 years |  |  |  |
Other assets, net | $ 1,107 |  | £ 703 | $ 1,272 | £ 928
Accrued retirement, other long-term liabilities | $ 1,107 |  | £ 703 | $ 1,272 | £ 928
Defined Contribution Plan |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Maximum employee contribution | 50.00% |  |  |  |
Employer matching contribution | 100.00% |  |  |  |
Maximum employer contribution | 5.00% |  |  |  |
Total contributions | $ 1,256 | 1,029 |  |  |
Defined Contribution Plan | 401(K) Plan |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Maximum employee contribution | 35.00% |  |  |  |
Vesting percentage | 100.00% |  |  |  |
Defined Contribution Plan | AME Plan |  |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |  |
Total contributions | $ 218 | $ 179 |  |  |

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