LEASES - Lease Costs (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019
Leases [Abstract]
Cash paid for amounts included in the measurement of lease liabilities - operating cash flows	$ 18,925	$ 22,950
Right-of-use assets obtained in exchange for new operating leases - non-cash activity	$ 702	$ 23,446