Acquisition - DSC (Details) - USD ($) $ in Thousands		3 Months Ended		12 Months Ended
	Mar. 08, 2019	Mar. 28, 2020	Mar. 30, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired		$ 75,630	$ 49,789
Deferred acquisition payments		1,451	14,001
Contingent consideration obligation		0	686
Goodwill		$ 726,234		$ 695,044
DSC
Business Acquisition [Line Items]
Date of acquisition	Mar. 08, 2019
Payments to acquire business				49,900
Payments to Acquire Businesses, Net of Cash Acquired				49,400
Costs associated with acquisition			$ 2,100
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			1,437
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			1,066
Other noncurrent assets	0			28
Accounts Payable and accrued liabilities	(2,461)			(2,861)
Deferred tax liabilities	(2,861)			(1,802)
Long-term lease liability	(37)			(37)
Net assets acquired	29,343			27,581
Goodwill	35,133			36,540
Total purchase price, net of cash acquired	$ 64,476			64,121
Interest Costs Incurred				$ 1,600