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Earnings (Loss) Per Share (Antidilutive Securities) (Details) - shares	12 Months Ended
	Dec. 28, 2018	Dec. 29, 2017	Dec. 30, 2016
Anitdilutive Securities Excluded From Earnings Per Share [Abstract]
Time-vested stock options, restricted stock and restricted stock units	0	1,000	1,000
Performance-vested stock options and restricted stock units	144	285	357

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- Definition

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- Definition

Performance-Based Vesting Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

Time-Based Vesting Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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No definition available.

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