Nature of Operations and Summary of Significant Accounting Policies - Intangible Assets By Major Asset Class (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 28, 2019	Dec. 29, 2018
Acquired Definite-Lived Intangible Assets [Line Items]
Gross	$ 252,421	$ 178,755
Accumulated Amortization	(90,614)	(75,179)
Currency Translation	(8,037)	(6,714)
Net	153,770	96,862
Acquired Intangible Assets [Abstract]
Gross	278,521	195,355
Currency Translation	(8,226)	(6,829)
Net	179,681	113,347
Tradenames
Acquired Indefinite-Lived Intangible Assets [Line Items]
Gross	26,100	16,600
Currency Translation	(189)	(115)
Net	25,911	16,485
Customer relationships
Acquired Definite-Lived Intangible Assets [Line Items]
Gross	171,583	113,283
Accumulated Amortization	(48,403)	(38,160)
Currency Translation	(5,037)	(4,520)
Net	118,143	70,603
Product technology
Acquired Definite-Lived Intangible Assets [Line Items]
Gross	57,647	46,501
Accumulated Amortization	(26,754)	(23,563)
Currency Translation	(1,932)	(1,677)
Net	28,961	21,261
Tradenames
Acquired Definite-Lived Intangible Assets [Line Items]
Gross	5,227	5,227
Accumulated Amortization	(2,311)	(1,980)
Currency Translation	(458)	(390)
Net	2,458	2,857
Other
Acquired Definite-Lived Intangible Assets [Line Items]
Gross	17,964	13,744
Accumulated Amortization	(13,146)	(11,476)
Currency Translation	(610)	(127)
Net	$ 4,208	$ 2,141