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LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Cash flows included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 29,961	$ 27,153
Operating cash flows from finance leases	1,306	1,406
Finance cash flows from finance leases	4,350	3,766
Non-cash leases activity:
Right-of-use lease assets obtained in exchange for new operating lease liabilities	63,499	24,382
Right-of-use lease assets obtained in exchange for new finance lease liabilities	$ 1,571	$ 4,819	$ 1,473

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Right-Of-Use Asset Obtained In Exchange For Lease Liability [Abstract]

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Amount of interest paid on finance lease liability.

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Amount of cash outflow for principal payment on finance lease.

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