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Commitments and Contingencies - Textual (Details) - USD ($) | Jun. 30, 2018 | Dec. 30, 2017
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Commitments And Contingencies Disclosure [Abstract] |  |
Liabilities recorded for obligations | $ 0 | $ 0

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- Definition Intellectual property indemnification obligations. + References No definition available. + Details
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- References No definition available. + Details
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