Consolidated Statement of Shareholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss
Beginning Balance at Dec. 31, 2020	$ 1,262,202	$ 352	$ 807,739	$ 487,912	$ (33,801)
Beginning Balance (in shares) at Dec. 31, 2020		175,790
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock under stock plans	59,101	$ 3	59,098
Net issuance of common stock under stock plans (in shares)		1,590
Repurchase of common stock	(48,294)	$ (1)		(48,293)
Repurchase of common stock (in shares)		(581)
Stock-based compensation expense	33,353		33,353
Payment of dividends	(31,800)			(31,800)
Net income	226,346			226,346
Net unrealized gain (loss) on available-for-sale investments, net of tax	(2,617)				(2,617)
Reclassification of net realized (gain) loss on the sale of available-for-sale investments	(87)				(87)
Foreign currency translation adjustment	(5,243)				(5,243)
Ending Balance at Oct. 03, 2021	1,492,961	$ 354	900,190	634,165	(41,748)
Ending Balance (in shares) at Oct. 03, 2021		176,799
Beginning Balance at Jul. 04, 2021	1,429,454	$ 353	874,883	593,290	(39,072)
Beginning Balance (in shares) at Jul. 04, 2021		176,707
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock under stock plans	14,694	$ 1	14,693
Net issuance of common stock under stock plans (in shares)		415
Repurchase of common stock	(27,417)	$ 0		(27,417)
Repurchase of common stock (in shares)		(323)
Stock-based compensation expense	10,614		10,614
Payment of dividends	(10,608)			(10,608)
Net income	78,900			78,900
Net unrealized gain (loss) on available-for-sale investments, net of tax	(521)				(521)
Reclassification of net realized (gain) loss on the sale of available-for-sale investments	(19)				(19)
Foreign currency translation adjustment	(2,136)				(2,136)
Ending Balance at Oct. 03, 2021	1,492,961	$ 354	900,190	634,165	(41,748)
Ending Balance (in shares) at Oct. 03, 2021		176,799
Beginning Balance at Dec. 31, 2021	$ 1,430,093	$ 351	914,802	562,882	(47,942)
Beginning Balance (in shares) at Dec. 31, 2021	175,481	175,481
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock under stock plans	$ 4,225	$ 0	4,225
Net issuance of common stock under stock plans (in shares)		256
Repurchase of common stock	(178,387)	$ (5)		(178,382)
Repurchase of common stock (in shares)		(2,807)
Stock-based compensation expense	41,419		41,419
Payment of dividends	(33,837)			(33,837)
Net income	160,214			160,214
Net unrealized gain (loss) on available-for-sale investments, net of tax	(21,185)				(21,185)
Reclassification of net realized (gain) loss on the sale of available-for-sale investments	103				103
Foreign currency translation adjustment	(13,425)				(13,425)
Ending Balance at Oct. 02, 2022	$ 1,389,220	$ 346	960,446	510,877	(82,449)
Ending Balance (in shares) at Oct. 02, 2022	172,930	172,930
Beginning Balance at Jul. 03, 2022	$ 1,389,985	$ 347	947,269	512,230	(69,861)
Beginning Balance (in shares) at Jul. 03, 2022		173,397
Increase (Decrease) in Stockholders' Equity
Net issuance of common stock under stock plans	(189)	$ 0	(189)
Net issuance of common stock under stock plans (in shares)		73
Repurchase of common stock	(24,070)	$ (1)		(24,069)
Repurchase of common stock (in shares)		(540)
Stock-based compensation expense	13,366		13,366
Payment of dividends	(11,264)			(11,264)
Net income	33,980			33,980
Net unrealized gain (loss) on available-for-sale investments, net of tax	(5,315)				(5,315)
Reclassification of net realized (gain) loss on the sale of available-for-sale investments	79				79
Foreign currency translation adjustment	(7,352)				(7,352)
Ending Balance at Oct. 02, 2022	$ 1,389,220	$ 346	$ 960,446	$ 510,877	$ (82,449)
Ending Balance (in shares) at Oct. 02, 2022	172,930	172,930