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Summary of Significant Accounting Policies (Recently Adopted Accounting Standards) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Accounting Policies [Abstract] |  |  |
Excess tax benefit | $ 1,544 | $ 0 | $ 0

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- Definition Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount + References No definition available. + Details
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- References No definition available. + Details
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