Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total		Common Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Income	Retained Earnings
Beginning Balance (shares) at Sep. 27, 2014			24,950
Beginning Balance at Sep. 27, 2014	$ 819,649		$ 248	$ 184,042	$ 34,682	$ 600,677
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans, net of shares withheld for employee taxes (shares)			322
Common stock issued under stock plans, net of shares withheld for employee taxes	2,006		$ 4	2,002
Tax impact from employee stock options	(667)			(667)
Repurchases of common stock (shares)			(1,302)
Repurchase of common stock (amount)	(75,027)		$ (14)	(75,013)
Stock-based compensation	18,243			18,243
Net income	76,409					76,409
Other comprehensive loss, net of tax	(44,195)	[1]			(44,195)
Ending Balance (shares) at Oct. 03, 2015			23,970
Ending Balance at Oct. 03, 2015	796,418		$ 238	128,607	(9,513)	677,086
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans, net of shares withheld for employee taxes (shares)			354
Common stock issued under stock plans, net of shares withheld for employee taxes	2,406		$ 4	2,402
Stock-based compensation	20,289			20,289
Net income	87,502					87,502
Other comprehensive loss, net of tax	$ 4,213	[1]			4,213
Ending Balance (shares) at Oct. 01, 2016	24,324		24,324
Ending Balance at Oct. 01, 2016	$ 910,828		$ 242	151,298	(5,300)	764,588
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans, net of shares withheld for employee taxes (shares)			307
Common stock issued under stock plans, net of shares withheld for employee taxes	(7,606)		$ 3	(7,609)
Tax impact from employee stock options	1,628			1,628
Purchase of non-controlling Interest	(528)			(528)
Stock-based compensation	26,614			26,614
Net income	207,122					207,122
Other comprehensive loss, net of tax	$ 25,206	[1]			25,206
Ending Balance (shares) at Sep. 30, 2017	24,631		24,631
Ending Balance at Sep. 30, 2017	$ 1,163,264		$ 245	$ 171,403	$ 19,906	$ 971,710

[1] Reclassification adjustments were not significant during fiscal years 2017, 2016 and 2015.