Closure costs (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Apr. 01, 2018 |
|
| Closure costs [Abstract] | ||
| Closure costs | $ 372 | $ 0 |
| X | ||||||||||
- Definition Non cash expenses associated with the closure of a restaurant. No definition available.
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| X | ||||||||||
- Definition Closure costs [Abstract] No definition available.
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