Stock-Based Compensation - Stock Grants and Modifications (Details) - 2009 Stock Incentive Plan - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
Dec. 28, 2019	Dec. 29, 2018	Dec. 30, 2017
Full value awards
Stock-Based Compensation
Number of equity awards granted	700	600	700
MSUs
Stock-Based Compensation
Number of equity awards granted	93	41	54
Cash consideration based upon achievement of specified levels of market conditions	$ 0	$ 0	$ 0
Award vesting period	3 years
PSUs
Stock-Based Compensation
Number of equity awards granted	0	41	54
Cash consideration based upon achievement of specified levels of market conditions		$ 0	$ 0
Award vesting period		3 years	3 years
Stock options
Stock-Based Compensation
Stock options granted (in shares)			0

Represents the cash consideration based upon achievement of specified levels of market conditions.

No definition available.

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

+ 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 (a)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target 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)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

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

+ References

No definition available.

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