GOODWILL AND INTANGIBLE ASSETS, NET - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 27, 2022	Mar. 28, 2021	Dec. 26, 2021
Indefinite-lived Intangible Assets [Line Items]
Goodwill	$ 35,970		$ 35,970
Amortization expense for intangible assets	1,900	$ 1,300
Total intangible assets	47,080		46,172
Accumulated amortization	(15,203)		(13,304)
Intangible assets, net	31,877		32,868
Internal use software
Indefinite-lived Intangible Assets [Line Items]
Total intangible assets	$ 27,030		26,122
Developed technology
Indefinite-lived Intangible Assets [Line Items]
Useful life	5 years
Total intangible assets	$ 20,050		$ 20,050

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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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.

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Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

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