PENSION AND OTHER POSTRETIREMENT BENEFITS (Schedule of Defined Benefit Plan Obligations and Assets) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2019	Dec. 30, 2018	Dec. 31, 2017	Dec. 25, 2016
Change in plan assets:
Fair value of plan assets, beginning of year	$ 102,414
Fair value of plan assets, end of year	294,589	$ 102,414
Pension Benefits
Change in projected benefit obligation:
Projected benefit obligation, beginning of year	157,619	178,247
Interest cost	6,673	5,463	$ 5,571
Actuarial losses (gains)	20,729	(15,635)
Benefits paid	(8,288)	(10,456)
Settlements	(10,076)	0
Other	8	0
Tulip acquisition	198,417	0
Currency translation loss	3,984	0
Projected benefit obligation, end of year	369,066	157,619	178,247
Change in plan assets:
Fair value of plan assets, beginning of year	102,414	112,570
Actual return on plan assets	18,904	(10,881)
Contributions by employer	8,295	11,181
Benefits paid	(8,288)	(10,456)
Settlements	(10,076)	0
Other	(70)	0
Tulip acquisition	179,702	0
Currency translation gain	3,708	0
Fair value of plan assets, end of year	294,589	102,414	112,570
Funded status:
Unfunded benefit obligation, end of year	(74,477)	(55,205)
Amounts recognized in the Consolidated Balance Sheets as of end of year:
Current liability	(14,967)	(8,267)
Long-term liability	(59,510)	(46,938)
Recognized liability	(74,477)	(55,205)
Amounts recognized in accumulated other comprehensive loss at end of year:
Net actuarial loss (gain)	58,239	54,343	54,235	$ 46,494
Other Benefits
Change in projected benefit obligation:
Projected benefit obligation, beginning of year	1,462	1,603
Interest cost	52	46
Actuarial losses (gains)	132	(72)
Benefits paid	0	0
Settlements	(119)	(115)
Other	0	0
Tulip acquisition	0	0
Currency translation loss	0	0
Projected benefit obligation, end of year	1,527	1,462	1,603
Change in plan assets:
Fair value of plan assets, beginning of year	0	0
Actual return on plan assets	0	0
Contributions by employer	119	115
Benefits paid	0	0
Settlements	(119)	(115)
Other	0	0
Tulip acquisition	0	0
Currency translation gain	0	0
Fair value of plan assets, end of year	0	0	0
Funded status:
Unfunded benefit obligation, end of year	(1,527)	(1,462)
Amounts recognized in the Consolidated Balance Sheets as of end of year:
Current liability	(158)	(149)
Long-term liability	(1,369)	(1,313)
Recognized liability	(1,527)	(1,462)
Amounts recognized in accumulated other comprehensive loss at end of year:
Net actuarial loss (gain)	$ 91	$ (34)	$ 35	$ (31)