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RESTRUCTURING AND ASSET IMPAIRMENTS - Narrative (Details) - USD ($) $ in Thousands	Sep. 26, 2020	Jun. 27, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Dec. 29, 2018
Restructuring Cost and Reserve [Line Items]
Severance and other personnel related costs liability and lease obligation liabilities	$ 6,718	$ 7,199	$ 6,405	$ 3,783	$ 2,758	$ 2,921
Accrued Compensation
Restructuring Cost and Reserve [Line Items]
Severance and other personnel related costs liability and lease obligation liabilities	6,800			3,800
Severance and Transition Costs | Other Noncurrent Liabilities
Restructuring Cost and Reserve [Line Items]
Severance and other personnel related costs liability and lease obligation liabilities	$ 100			$ 0

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

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