LEASES - Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 28, 2020	Mar. 30, 2019
Cash flows included in the measurement of lease liabilities:
Operating cash flows from operating leases	$ 6,974	$ 6,533
Operating cash flows from finance leases	340	352
Finance cash flows from finance leases	1,572	838
Non-cash leases activity:
Right-of-use lease assets obtained in exchange for new operating lease liabilities	25,407	1,688
Right-of-use lease assets obtained in exchange for new finance lease liabilities	$ 593	$ 0