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Stock Compensation Plans and Stock Based Compensation (Details 10) shares in Thousands | Dec. 28, 2019 shares
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Common stock reserved for future issuance |  |
Common stock reserved for future issuance | 22,842 |
Employee equity incentive plans [Member] |  |
Common stock reserved for future issuance |  |
Common stock reserved for future issuance | 15,898 | [1]
Employee stock purchase plans [Member] |  |
Common stock reserved for future issuance |  |
Common stock reserved for future issuance | 6,039 |
Directors stock option plans [Member] |  |
Common stock reserved for future issuance |  |
Common stock reserved for future issuance | 905 | [1]
[1] | Includes shares reserved for: (i) issuance upon exercise of future option grants, (ii) issuance upon vesting of future restricted stock grants, (iii) outstanding but unexercised options to purchase common stock, or (iv) unvested restricted stock units.

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- Definition Aggregate number of common shares reserved for future issuance. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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