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Other Non-Current Assets (Details) - USD ($) $ in Thousands | Sep. 26, 2020 | Dec. 28, 2019
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Other Assets, Longterm [Abstract] |  |
Lessee ROU assets | $ 26,825 | $ 19,137
Strategic investments | 7,950 | 6,475
Prepaid deposits | 3,616 | 3,022
Restricted cash, non-current(1) | 154 | 157
Other non-current assets | $ 38,545 | $ 28,791

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