Consolidated Statements of Earnings (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 27, 2020	Mar. 29, 2019
Income Statement [Abstract]
Revenues	$ 373,567	$ 404,870
Cost of Goods and Services Sold	174,936	188,828
Gross Profit	198,631	216,042
Product development	17,081	16,569
Selling, marketing and distribution	57,388	60,817
General and administrative	34,350	34,129
Operating Earnings	89,812	104,527
Interest expense	2,486	3,535
Other expense, net	5,223	269
Earnings Before Income Taxes	82,103	100,723
Income taxes	9,285	13,974
Net Earnings	$ 72,818	$ 86,749
Basic earnings per share	$ 0.43	$ 0.52
Diluted earnings per share	$ 0.42	$ 0.51