Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		12 Months Ended
		Oct. 01, 2016	Oct. 03, 2015	Sep. 27, 2014
Statement of Comprehensive Income [Abstract]
Net income		$ 87,502	$ 76,409	$ 59,106
Other comprehensive income (loss):
Translation adjustment, net of taxes	[1],[2]	1,731	(45,624)	(19,185)
Net gain (loss) on derivative instruments, net of taxes	[1],[3]	(28)	601	(573)
Changes in unrealized gains (losses) on available-for-sale securities, net of taxes	[1],[4]	2,510	828	(10)
Other comprehensive income (loss), net of tax	[1]	4,213	(44,195)	(19,768)
Comprehensive income		91,715	32,214	39,338
Tax expense (benefit) provided on translation adjustments		279	(1,768)	250
Tax expense (benefit) provided on net gain (loss) on derivative instruments		(17)	349	(332)
Tax expense (benefit) provided on changes in unrealized gain (losses) on available-for-sale securities		$ 1,399	$ 486	$ (7)

[1] Reclassification adjustments were not significant during fiscal years 2016, 2015 and 2014.

[2] Tax expenses (benefits) of $279, $(1,768) and $250 were provided on translation adjustments during fiscal 2016, 2015 and 2014, respectively.

[3] Tax expenses (benefits) of $(17), $349 and $(332) were provided on net gain (loss) on derivative instruments during fiscal 2016, 2015 and 2014, respectively.

[4] Tax expenses (benefits) of $1,399, $486 and $(7) were provided on changes in unrealized gains (losses) on available-for-sale securities during fiscal 2016, 2015 and 2014, respectively.