Stock-Based Compensation Plans - Narrative (Details)	6 Months Ended	12 Months Ended
Jun. 28, 2020 USD ($) installment shares	Dec. 29, 2019
Stock and Stock-Based Compensation Plans
Aggregate awards granted limit, options (in shares)	1,000,000
Aggregate awards granted limit, restricted shares (in shares)	500,000
Cash-based award limit \| $	$ 5,000,000
Cash fees received limit \| $	$ 750,000
Restricted Stock Units
Stock and Stock-Based Compensation Plans
Vesting period	3 years	2 years
Performance-based Restricted Stock Units
Stock and Stock-Based Compensation Plans
Vesting period	3 years
Restricted Stock Awards
Stock and Stock-Based Compensation Plans
Vesting period	1 year
Number of annual installments \| installment	4
2019 OSIP
Stock and Stock-Based Compensation Plans
Number of common shares reserved and available for awards (in shares)	4,661,799

Share-based Payment Arrangement, Equity Instruments Other than Options, Vesting, Number of Annual Installments

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Cash-Based Award, Limit

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Cash Fees, Limit

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Potential Number Of Shares, Limit

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- Definition

Share-based Compensation Arrangement By Share-based Payment Award, Options, Potential Number Of Shares, Limit

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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
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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

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