OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Self-Insurance (Details) - USD ($) $ in Millions	4 Months Ended	8 Months Ended	12 Months Ended
Jan. 03, 2021	Aug. 28, 2020	Jan. 01, 2023	Jan. 02, 2022
Health Insurance Product Line
Property, Plant and Equipment [Line Items]
Insurance expense	$ 6.5	$ 9.9	$ 18.7	$ 18.0
Self-insurance reserves			1.6	1.9
Automobile, General Liability And Workers' Compensation Insurance
Property, Plant and Equipment [Line Items]
Insurance expense	$ 1.5	$ 6.5	8.5	8.7
Self-insurance reserves			$ 4.6	$ 5.9

The expense in the period incurred with respect to protection provided by insurance entities against risks other than risks associated with production (which are allocated to cost of sales).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.4)
-URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227

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Balance Type:	debit
Period Type:	duration

- 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.

+ Details

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- Definition

Carrying amount (including both current and noncurrent portions) of accrued known and estimated losses incurred as of the balance sheet date for which no insurance coverage exists, and for which a claim has been made or is probable of being asserted, typically arising from workmen's compensation-type of incidents and personal injury to nonemployees from accidents on the entity's property.

+ 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 210.5-02.24)
-URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

+ Details

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Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
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- Details

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