Summary of Fair Values of Assets Acquired and Liabilities Assumed Purchase Price Allocation (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 28, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill	$ 230,371	$ 217,662
Med X Change, Inc and Ingenia-CAT, S.L.
Business Acquisition [Line Items]
Cash	1,000
Accounts receivable	1,739
Inventories	2,372
Property, plant and equipment	565
Intangible assets	22,376
Goodwill	13,394
Other assets	601
Total assets acquired	42,047
Accounts payable	604
Deferred tax liabilities	2,550
Other liabilities	910
Total liabilities assumed	4,064
Total assets acquired, net of liabilities assumed	37,983
Less: cash acquired	1,000
Total purchase price, net of cash acquired	36,983
Less: contingent consideration	6,569
Less: purchase price holdback	961
Less: working capital adjustment	569
Net cash used for acquisition of businesses	$ 28,884