Acquisition - DSC (Details) - USD ($) $ in Thousands		9 Months Ended
	Mar. 08, 2019	Sep. 28, 2019	Sep. 29, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 266,373	$ 380,268
Deferred acquisition payments		32,462	0
Contingent consideration obligation		686	$ 0
Goodwill		659,840		$ 550,202
DSC
Business Acquisition [Line Items]
Business Acquisition, Date of Acquisition Agreement	Mar. 08, 2019
Business Acquisition Transaction Costs		2,100
Payments to acquire business	$ 49,900
Payments to Acquire Businesses, Net of Cash Acquired	49,400
Fixed deferred business acquisition payment		16,100
Deferred acquisition payments		14,000
Contingent consideration obligation		700
Trade accounts and notes receivable, net	1,840	1,840
Inventories, net	5,523	4,307
Other current assets	1,389	1,389
Property, Plant, and Equipment	16,791	16,654
Identifiable Intangible Assets	7,976	6,870
Right-of-use assets	79	79
Deferred tax assets	1,104	996
Other noncurrent assets	0	28
Accounts Payable and accrued liabilities	(2,461)	(2,474)
Deferred tax liabilities	(2,861)	(2,070)
Long-term lease liability	(37)	(37)
Net Assets Acquired	29,343	27,582
Goodwill	35,133	36,539
Total Purchase Price	$ 64,476	$ 64,121