CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 27, 2021	Jun. 28, 2020	Jun. 27, 2021	Jun. 28, 2020
Income Statement [Abstract]
Net revenues	$ 713,473	$ 567,034	$ 1,347,398	$ 1,197,676
Cost of goods sold	315,917	288,662	605,315	585,680
Gross profit	397,556	278,372	742,083	611,996
Selling, general and administrative expenses	224,159	191,193	427,307	338,989
Research and development expenses	33,283	29,364	63,230	56,760
Restructuring and impairment charges	11,494	19,005	19,492	20,351
Income from continuing operations before interest and taxes	128,620	38,810	232,054	195,896
Interest expense	16,171	15,682	32,969	31,121
Interest income	(232)	(163)	(891)	(742)
Loss on extinguishment of debt	12,986	0	12,986	0
Income from continuing operations before taxes	99,695	23,291	186,990	165,517
Taxes on income from continuing operations	16,412	11,848	28,840	22,922
Income from continuing operations	83,283	11,443	158,150	142,595
Operating (loss) income from discontinued operations	(46)	22	(47)	18
Tax (expense) benefit on operating loss from discontinued operations	(11)	9	(11)	7
(Loss) income from discontinued operations	(35)	13	(36)	11
Net income	$ 83,248	$ 11,456	$ 158,114	$ 142,606
Basic:
Income from continuing operations (in dollars per share)	$ 1.78	$ 0.25	$ 3.39	$ 3.07
Loss from discontinued operations (in dollars per share)	0	0	(0.01)	0
Net income (in dollars per share)	1.78	0.25	3.38	3.07
Diluted:
Income from continuing operations (in dollars per share)	1.76	0.24	3.34	3.02
Loss from discontinued operations (in dollars per share)	0	0	(0.01)	0
Net income (in dollars per share)	$ 1.76	$ 0.24	$ 3.33	$ 3.02
Weighted average common shares outstanding
Basic (in shares)	46,741	46,442	46,719	46,412
Diluted (in shares)	47,433	47,242	47,420	47,237