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LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 26, 2020	Sep. 28, 2019
Cash flows included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 21,959	$ 20,084
Operating cash flows from finance leases	986	1,058
Finance cash flows from finance leases	3,474	2,862
Non-cash leases activity:
Right-of-use lease assets obtained in exchange for new operating lease liabilities	50,491	20,805
Right-of-use lease assets obtained in exchange for new finance lease liabilities	$ 735	$ 4,741

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Cash Flow, Lessee [Abstract]

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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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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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