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Leases (Details 2) $ in Thousands | 3 Months Ended
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Mar. 28, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities: |
Financing cash flows from finance leases | $ 587
Operating cash flows from finance leases | 294
Operating cash flows from operating leases | 5,213
Right of use assets obtained in exchange for new lease obligations: |
Finance lease liabilities | 1,566
Operating lease liabilities, including from acquisitions | $ 159,175

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