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Stock-Based Compensation (Details 3) - Employee Stock Option [Member] shares in Thousands	6 Months Ended
	Jun. 29, 2018 shares
Schedule of Employee Service Share-based Compensation [Line Items]
Outstanding at December 29, 2017	3,725
Options, Granted, Shares	786
Options, Exercised, Shares	(306)
Options, Forfeited or expired, Shares	(21)
Outstanding at June 29, 2018	4,184
Exercisable at June 29, 2018	2,689

X

- Definition

Line items represent the schedule of employee service share-based compensation.

+ References

No definition available.

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- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iii)
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- Definition

For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
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- Definition

Gross number of share options (or share units) granted during the period.

+ References

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Number of options outstanding, including both vested and non-vested options.

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Number of share options (or share units) exercised during the current period.

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