ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Mar. 28, 2025	Dec. 27, 2024	Mar. 29, 2024	Dec. 29, 2023	Mar. 28, 2025	Mar. 29, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 1,507,348	$ 1,539,900	$ 1,502,345	$ 1,468,119	$ 1,539,900	$ 1,468,119
Other comprehensive income/loss before reclassifications	6,666		(4,925)		(10,866)	4,802
Amounts reclassified from accumulated other comprehensive income/loss, net of tax	41		53		83	106
Total other comprehensive (loss) income	6,707	(17,490)	(4,872)	9,780	(10,783)	4,908
Balance at end of period	1,410,420	1,507,348	1,571,896	1,502,345	1,410,420	1,571,896
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(36,584)	(19,094)	(24,160)	(33,940)	(19,094)	(33,940)
Total other comprehensive (loss) income	6,707	(17,490)	(4,872)	9,780
Balance at end of period	(29,877)	(36,584)	(29,032)	(24,160)	(29,877)	(29,032)
Defined Benefit Pension Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(10,366)	(10,408)	(10,748)	(10,801)	(10,408)	(10,801)
Other comprehensive income/loss before reclassifications	0		0		0	0
Amounts reclassified from accumulated other comprehensive income/loss, net of tax	41		53		83	106
Total other comprehensive (loss) income	41		53		83	106
Balance at end of period	(10,325)	(10,366)	(10,695)	(10,748)	(10,325)	(10,695)
Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(26,218)	(8,686)	(13,412)	(23,139)	(8,686)	(23,139)
Other comprehensive income/loss before reclassifications	6,666		(4,925)		(10,866)	4,802
Amounts reclassified from accumulated other comprehensive income/loss, net of tax	0		0		0	0
Total other comprehensive (loss) income	6,666		(4,925)		(10,866)	4,802
Balance at end of period	$ (19,552)	$ (26,218)	$ (18,337)	$ (13,412)	$ (19,552)	$ (18,337)