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LEASES (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 26, 2020 | Dec. 28, 2019
Lessee, Lease, Description [Line Items] |  |
Lease renewal term | 5 years |
Operating lease, not yet commenced, first year annual cash expense | $ 4,000 |
Operating lease not yet commenced, annual increase (percent) | 2.00% |
Operating lease not yet commenced, lease term | 25 years |
Impairment of right-of-use asset |  | $ 12,063
After tax adjustment to retained earnings | $ 1,182,062 | 1,144,338
Minimum |  |
Lessee, Lease, Description [Line Items] |  |
Remaining lease term | 1 year |
Maximum |  |
Lessee, Lease, Description [Line Items] |  |
Remaining lease term | 15 years |
Accounting Standards Update 2016-02 [Member] | Retained earnings | Cumulative Effect, Period of Adoption, Adjustment |  |
Lessee, Lease, Description [Line Items] |  |
After tax adjustment to retained earnings |  | $ 8,444

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