ACQUISITIONS - Schedule of Business Acquisitions Pro Forma (Details) - Walpart, Convert, and Torrent [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2019	Jun. 30, 2018	Jun. 29, 2019	Jun. 30, 2018
Business Acquisition [Line Items]
Net sales	$ 700,871	$ 697,764	$ 1,395,429	$ 1,416,676
Net earnings	$ 41,397	$ 35,167	$ 78,116	$ 74,758
Earnings per share-diluted (in dollars per share)	$ 1.90	$ 1.56	$ 3,570	$ 3,300