Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total		Common Stock	Add. Paid-in Capital	Accum. Other Comp. Income (Loss)	Retained Earnings
Beginning balance at Sep. 28, 2019	$ 1,284,736		$ 238	$ 34,320	$ (36,336)	$ 1,286,514
Beginning balance (in shares) at Sep. 28, 2019			23,982,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans, net of shares withheld for employee taxes	(7,428)		$ 2	(7,430)
Common stock issued under stock plans, net of shares withheld for employee taxes (in shares)			171,000
Stock-based compensation	7,574			7,574
Net income	5,793					5,793
Other comprehensive income (loss), net of tax	15,300	[1]			15,300
Ending balance at Dec. 28, 2019	1,305,975		$ 240	34,464	(21,036)	1,292,307
Ending balance (in shares) at Dec. 28, 2019			24,153,000
Beginning balance at Oct. 03, 2020	$ 927,224		$ 241	80,275	(25,667)	872,375
Beginning balance (in shares) at Oct. 03, 2020	24,257,000		24,257,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued under stock plans, net of shares withheld for employee taxes	$ (3,007)		$ 2	(3,009)
Common stock issued under stock plans, net of shares withheld for employee taxes (in shares)			190,000
Stock-based compensation	11,798			11,798
Net income	144					144
Other comprehensive income (loss), net of tax	15,719	[1]			15,719
Ending balance at Jan. 02, 2021	$ 951,878		$ 243	$ 89,064	$ (9,948)	$ 872,519
Ending balance (in shares) at Jan. 02, 2021	24,447,000		24,447,000

[1] Reclassification adjustments were not significant during the three months ended January 2, 2021 and December 28, 2019.