Business Acquisitions (Purchase Price Schedule) (Details) - USD ($) $ in Thousands		3 Months Ended	9 Months Ended
	Jul. 05, 2016	Oct. 01, 2016	Jul. 01, 2017	Jul. 02, 2016
Business Acquisition [Line Items]
Total purchase price, net of cash acquired			$ 1,000	$ 0
PCB Group, Inc
Business Acquisition [Line Items]
Consideration paid to PCB shareholders	$ 580,000
Consideration for PCB closing cash	11,612
Deferred endowment consideration	1,000
Net pre-acquisition earn-out	(141)
Net working capital adjustment	(147)
Cash acquired	(10,551)
Total purchase price, net of cash acquired	$ 581,773
Employees | PCB Group, Inc
Business Acquisition [Line Items]
Consideration paid to PCB shareholders		$ 10,000