Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands		Total	Common stock	Additional paid-in capital	Treasury stock	Retained earnings	Retained earnings Cumulative Effect, Period of Adoption, Adjustment	Accumulated other comprehensive loss
Cumulative effect adjustment for adoption of new accounting pronouncement (1)	[1]						$ (1,077)
Beginning of period (in shares) at Sep. 28, 2019			29,004,000
Exercise of stock options and vesting of other share-based awards			526,000
Treasury shares purchased (in shares)			(316,000)
End of period (in shares) at Jul. 04, 2020			29,214,000
Beginning of period at Sep. 28, 2019		$ 865,576	$ 529	$ 597,401	$ (893,247)	$ 1,178,677		$ (17,784)
Exercise of stock options and vesting of other share-based awards			5
Share-based compensation expense				17,367
Exercise of stock options and vesting of other share-based awards, including tax withholding				335
Treasury shares purchased					(19,484)
Net income		79,774				79,774
Other comprehensive income		2,325						2,325
End of period at Jul. 04, 2020		944,821	$ 534	615,103	(912,731)	1,257,374		(15,459)
Beginning of period (in shares) at Apr. 04, 2020			29,186,000
Exercise of stock options and vesting of other share-based awards			28,000
Treasury shares purchased (in shares)			0
End of period (in shares) at Jul. 04, 2020			29,214,000
Beginning of period at Apr. 04, 2020		892,558	$ 534	607,446	(912,731)	1,221,532		(24,223)
Exercise of stock options and vesting of other share-based awards			0
Share-based compensation expense				6,542
Exercise of stock options and vesting of other share-based awards, including tax withholding				1,115
Treasury shares purchased					0
Net income		35,842				35,842
Other comprehensive income		8,764						8,764
End of period at Jul. 04, 2020		$ 944,821	$ 534	615,103	(912,731)	1,257,374		(15,459)
Beginning of period (in shares) at Oct. 03, 2020		29,002,000	29,002,000
Exercise of stock options and vesting of other share-based awards			323,000
Treasury shares purchased (in shares)			(948,000)
End of period (in shares) at Jul. 03, 2021		28,377,000	28,377,000
Beginning of period at Oct. 03, 2020		$ 977,480	$ 535	621,564	(934,639)	1,295,079		(5,059)
Exercise of stock options and vesting of other share-based awards			3
Share-based compensation expense				17,682
Exercise of stock options and vesting of other share-based awards, including tax withholding				(6,095)
Treasury shares purchased					(79,202)
Net income		105,571				105,571
Other comprehensive income		5,011						5,011
End of period at Jul. 03, 2021		$ 1,020,450	$ 538	633,151	(1,013,841)	1,400,650		(48)
Beginning of period (in shares) at Apr. 03, 2021			28,659,000
Exercise of stock options and vesting of other share-based awards			10,000
Treasury shares purchased (in shares)			(292,000)
End of period (in shares) at Jul. 03, 2021		28,377,000	28,377,000
Beginning of period at Apr. 03, 2021		$ 1,013,952	$ 538	627,176	(986,539)	1,373,041		(264)
Exercise of stock options and vesting of other share-based awards			0
Share-based compensation expense				5,860
Exercise of stock options and vesting of other share-based awards, including tax withholding				115
Treasury shares purchased					(27,302)
Net income		27,609				27,609
Other comprehensive income		216						216
End of period at Jul. 03, 2021		$ 1,020,450	$ 538	$ 633,151	$ (1,013,841)	$ 1,400,650		$ (48)

[1] See Note 1, "Basis of Presentation," for a discussion of recently adopted accounting pronouncements.