Long-term debt - Summary of Future Minimum Lease Payments for Finance Leases (Detail) $ in Thousands |
Mar. 28, 2020
USD ($)
|
|---|---|
| Debt Disclosure [Abstract] | |
| 2021 | $ 76 |
| 2022 | 71 |
| 2023 | 55 |
| 2024 | 20 |
| 2025 | 4 |
| Total minimum lease payments | 226 |
| Less imputed interest | 39 |
| Total | $ 187 |