Acquisitions (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 29, 2018	Mar. 31, 2018	Jun. 30, 2018
Business Acquisition [Line Items]
Payments to Acquire Businesses, Net of Cash Acquired	$ 2,949	$ 57,800
Business Combination, Contingent Consideration, Liability		16,000	$ 8,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles		26,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill		10,500
Goodwill	$ 532,251	$ 41,889	$ 532,251