DERIVATIVE FINANCIAL INSTRUMENTS - Gain (Loss) on Derivatives (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives recognized in earnings	$ 709	$ 714	$ 1,612	$ 1,903
Commodity forward contracts | Product cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives recognized in earnings	0	(96)	0	(96)
Foreign currency forward contracts | Other income (expenses)
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives recognized in earnings	(93)	152	30	704
Foreign currency forward contracts | Product sales
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives recognized in earnings	99	0	152	0
Interest rate hedge amortization | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives recognized in earnings	(16)	(16)	(32)	(32)
Cross currency swap contracts | Interest expense
Derivative Instruments, Gain (Loss) [Line Items]
Gain (loss) on derivatives recognized in earnings	$ 719	$ 674	$ 1,462	$ 1,327