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Significant Accounting Policies - Investments (Details) - USD ($) $ in Millions	Jan. 02, 2021	Dec. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Cost method investments	$ 0.3	$ 0.5

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- Definition

Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
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