PENSION AND OTHER POSTRETIREMENT BENEFITS - Schedule of Unrecognized Benefit Amounts (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Pension Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Net actuarial loss, beginning of period	$ 58,143	$ 95,522
Amortizations	(232)	(570)
Actuarial loss (gain)	(29,146)	(27,980)
Asset loss (gain)	20,649	(1,505)
Currency translation loss	27	364
Net actuarial loss, end of period	49,441	65,831
Other Benefits
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Net actuarial loss, beginning of period	118	174
Amortizations	0	(1)
Actuarial loss (gain)	(56)	(53)
Asset loss (gain)	0	0
Currency translation loss	0	0
Net actuarial loss, end of period	$ 62	$ 120