Fair Value Measurements (Narrative) (Details) - USD ($) $ in Millions	Jun. 26, 2021	Dec. 26, 2020
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Debt, Carrying Value	$ 469.6	$ 424.7
Significant Other Observable Inputs (Level 2) \| Term Loan
Fair Value, Assets Measured on Recurring Basis, Financial Statement Captions [Line Items]
Debt, Carrying Value	173.8	275.0
Debt Instrument, Fair Value Disclosure	$ 173.8	$ 275.0

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13433-108611

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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

No definition available.

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