Stockholders' Equity - Schedule of Share-based Compensation, Stock Options, Activity (Details) - $ / shares shares in Thousands	6 Months Ended
Jun. 28, 2019
Stockholders Equity Note [Abstract]
Options, Outstanding at December 28, 2018	3,920
Options, Granted, Shares	801
Options, Exercised, Shares	(126)
Options, Forfeited or expired, Shares	(16)
Options,Outstanding at June 28, 2019	4,579
Options, Exercisable at June 28, 2019	3,026
Minimum Exercise Price	$ 3.50
Maximum Exercise Price	$ 43.84

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.

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

+ References

No definition available.

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

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- Definition

The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range.

+ References

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

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