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Leases - Other Information (Details) - USD ($) $ in Thousands | 9 Months Ended
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Sep. 24, 2020 | Sep. 26, 2019
Cash paid for amounts included in the measurement of lease liabilities: |  |
Financing cash flows from finance leases | $ 1,389 | $ 1,908
Operating cash flows from finance leases | 794 |
Operating cash flows from operating leases | 11,376 |
Right of use assets obtained in exchange for new lease obligations: |  |
Finance lease liabilities | 1,364 |
Operating lease liabilities | $ 9,644 |

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