LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 27, 2020	Dec. 29, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 91,254	$ 100,473
Operating cash flow from finance leases	99	32
Financing cash flows from finance leases	486	167
Operating lease assets obtained in exchange for operating lease liabilities	60,776	34,648
Finance lease assets obtained in exchange for finance lease liabilities	$ 0	$ 2,182