Fair value measurements - Estimated fair value of long-term debt, including current maturities (Details) - Level 2 - USD ($) $ in Thousands |
Sep. 26, 2020 |
Mar. 28, 2020 |
Sep. 28, 2019 |
|---|---|---|---|
| Fair value measurements | |||
| Total fair value of debt | $ 237,811 | $ 285,365 | $ 291,811 |
| The 2019 Elfa Revolving Credit Facility | |||
| Fair value measurements | |||
| Total fair value of debt | 1,107 | 9,050 | 10,813 |
| Revolving credit facility | |||
| Fair value measurements | |||
| Total fair value of debt | 78,000 | 26,000 | |
| Senior secured term loan facility | |||
| Fair value measurements | |||
| Total fair value of debt | 236,431 | 198,041 | 254,729 |
| Obligations under capital leases | |||
| Fair value measurements | |||
| Total fair value of debt | $ 273 | $ 274 | $ 269 |