SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 27, 2023	Sep. 28, 2022	Sep. 27, 2023	Sep. 28, 2022	Dec. 28, 2022
Variable Interest Entity [Line Items]
Net assets held by SSE holders	$ 1,564,856		$ 1,564,856		$ 1,494,862
General and administrative expenses	30,939	$ 26,931	93,726	$ 87,804
Revision of Prior Period, Reclassification, Adjustment
Variable Interest Entity [Line Items]
General and administrative expenses		$ 286		$ 764
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Net assets held by SSE holders	$ 384,222		$ 384,222		$ 362,571