BUSINESS SEGMENTS - Summary by Geographical Area by Location (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 26, 2020	Sep. 26, 2020	Jun. 27, 2020	Mar. 28, 2020	Dec. 28, 2019	Sep. 28, 2019	Jun. 29, 2019	Mar. 30, 2019	Dec. 26, 2020	Dec. 28, 2019	Dec. 29, 2018
Summary by Geographical Area by Location
Net sales	$ 798,377	$ 733,970	$ 688,808	$ 674,200	$ 683,626	$ 690,340	$ 700,871	$ 692,139	$ 2,895,355	$ 2,766,976	$ 2,757,144
Long-lived assets	1,398,535				1,374,992				1,398,535	1,374,992	1,189,634
United States
Summary by Geographical Area by Location
Net sales									1,919,136	1,872,840	1,771,390
Long-lived assets	748,886				753,545				748,886	753,545	624,143
Australia
Summary by Geographical Area by Location
Net sales									252,253	255,271	325,553
Long-lived assets	$ 179,673				193,029				$ 179,673	193,029	168,438
Australia | Foreign country | Net Sales
Summary by Geographical Area by Location
Threshold for disclosure as percentage of net sales by customer	9.00%								9.00%
Denmark
Summary by Geographical Area by Location
Net sales									$ 120,063	90,206	92,559
Long-lived assets	$ 61,546				58,435				61,546	58,435	64,497
Other
Summary by Geographical Area by Location
Net sales									603,903	548,659	567,642
Long-lived assets	$ 408,430				$ 369,983				$ 408,430	$ 369,983	$ 332,556