Shareholders' Equity (Capped Calls) (Details) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Jul. 02, 2016 USD ($) shares $ / shares	Sep. 30, 2017 shares	Oct. 01, 2016 USD ($)
Class of Stock [Line Items]
Additional paid in capital, capped calls | $	$ 7,935		$ 7,935
Initial capped calls equivalent shares (in shares)	2,282,000
Capped calls settled, percentage		10.00%
Settlement of capped calls (in shares)		12,000
Minimum [Member]
Class of Stock [Line Items]
Strike price, capped calls | $ / shares	$ 50.40
Minimum [Member] | Common Stock [Member]
Class of Stock [Line Items]
Common stock to be received and retired under capped calls (in shares)		0
Maximum [Member]
Class of Stock [Line Items]
Strike price, capped calls | $ / shares	$ 58.80
Maximum [Member] | Common Stock [Member]
Class of Stock [Line Items]
Common stock to be received and retired under capped calls (in shares)		293,000