SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Allowance for Doubtful Receivables (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 25, 2021	Dec. 26, 2020	Dec. 28, 2019
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Balance at Beginning of Period	$ 15,952	$ 9,548	$ 8,277
Charged to Profit and Loss	3,379	7,957	2,543
Currency Translation Adjustment	(339)	260	(76)
Deductions from Reserves	(942)	(1,813)	(1,196)
Balance at Close of Period	$ 18,050	$ 15,952	$ 9,548