PROPERTY AND EQUIPMENT - Additional Information (Details) $ in Millions	3 Months Ended	6 Months Ended
Jun. 28, 2023 USD ($)	Jun. 29, 2022 USD ($)	Jun. 28, 2023 USD ($)	Jun. 29, 2022 USD ($) restaurant
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 3.7	$ 3.6	$ 7.3	$ 7.2
California
Property, Plant and Equipment [Line Items]
Impairment of property and equipment	$ 0.0	$ 0.2	$ 0.0	$ 0.3
Number of restaurants primarily responsible for impairment \| restaurant				1

The number of restaurants that primarily resulted in long-lived asset impairment.

No definition available.

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- Definition

The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

+ References

+ Details

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- Definition

The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482740/230-10-45-28

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482099/360-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482130/360-10-45-4

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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.

+ Details

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