ACCUMULATED OTHER COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 24, 2021	Dec. 25, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	$ 864,736	$ 378,410
Other comprehensive loss before reclassifications	(1,458)	7,051
Amounts reclassified from accumulated other comprehensive income, net of tax	125	262
Other Comprehensive Income (Loss)	(1,333)	7,313
Balance at end of period	942,621	437,347
Defined Benefit Pension Items
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(19,318)	(30,761)
Other comprehensive loss before reclassifications	0	0
Amounts reclassified from accumulated other comprehensive income, net of tax	125	262
Other Comprehensive Income (Loss)	125	262
Balance at end of period	(19,193)	(30,499)
Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(9,408)	(11,793)
Other comprehensive loss before reclassifications	(1,458)	7,051
Amounts reclassified from accumulated other comprehensive income, net of tax	0	0
Other Comprehensive Income (Loss)	(1,458)	7,051
Balance at end of period	(10,866)	(4,742)
Accumulated Other Comprehensive Loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance at beginning of period	(28,726)	(42,554)
Other Comprehensive Income (Loss)	(1,333)	7,313
Balance at end of period	$ (30,059)	$ (35,241)