Acquisition - DSC (Details) - USD ($) $ in Thousands		6 Months Ended
	Mar. 08, 2019	Jun. 29, 2019	Jun. 30, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 49,267	$ 380,225
Deferred acquisition payment		14,001	0
Contingent consideration obligation		686	$ 0
Goodwill		583,328		$ 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	$ 49,700
Payments to Acquire Businesses, Net of Cash Acquired	49,300
Fixed deferred business acquisition payment		16,100
Deferred acquisition payment		14,000
Contingent consideration obligation		700
Trade accounts and notes receivable, net	1,840	1,840
Inventories, net	5,523	4,353
Other current assets	1,389	1,391
Property, Plant, and Equipment	16,791	16,652
Identifiable Intangible Assets	7,976	6,886
Right-of-use assets	79	79
Deferred tax assets	1,104	1,104
Other noncurrent assets	0	28
Accounts Payable and accrued liabilities	(2,461)	(2,540)
Deferred tax liabilities	(2,861)	(318)
Long-term lease liability	(37)	(37)
Net Assets Acquired	29,343	29,438
Goodwill	35,133	34,516
Total Purchase Price	$ 64,476	$ 63,954