Consolidated Condensed Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment	Accumulated Other Comprehensive Income / (Loss)	Accumulated Other Comprehensive Income / (Loss) Cumulative Effect, Period of Adoption, Adjustment
Beginning Balance (in shares) at Mar. 30, 2019			58,954
Beginning balance at Mar. 30, 2019	$ 1,140,240		$ 59	$ 1,363,677	$ (222,430)		$ (1,066)
Beginning balance (Accounting Standards Update 2016-02, net of tax) at Mar. 30, 2019		$ (726)				$ (726)
Beginning balance (Accounting Standards Update 2018-02) at Mar. 30, 2019						$ 257		$ (257)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	149,340				149,340
Change in unrealized gain (loss) on marketable securities, net of tax	1,946						1,946
Change in foreign currency translation adjustments	(520)						(520)
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)			1,115
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	(99)		$ 1	14,210	(14,310)
Repurchase and retirement of common stock (in shares)			(1,447)
Repurchase and retirement of common stock	(70,001)		$ (1)		(70,000)
Stock-based compensation	39,700			39,700
Ending Balance (in shares) at Dec. 28, 2019			58,622
Ending balance at Dec. 28, 2019	1,259,880		$ 59	1,417,587	(157,869)		103
Beginning Balance (in shares) at Sep. 28, 2019			57,786
Beginning balance at Sep. 28, 2019	1,178,625		$ 58	1,392,592	(213,274)		(751)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	68,512				68,512
Change in unrealized gain (loss) on marketable securities, net of tax	(29)						(29)
Change in foreign currency translation adjustments	883						883
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)			836
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	(2,271)		$ 1	10,835	(13,107)
Stock-based compensation	14,160			14,160
Ending Balance (in shares) at Dec. 28, 2019			58,622
Ending balance at Dec. 28, 2019	1,259,880		$ 59	1,417,587	(157,869)		103
Beginning Balance (in shares) at Mar. 28, 2020			58,242
Beginning balance at Mar. 28, 2020	1,229,779		$ 58	1,434,871	(201,681)		(3,469)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	192,063				192,063
Change in unrealized gain (loss) on marketable securities, net of tax	6,404						6,404
Change in foreign currency translation adjustments	2,093						2,093
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)			713
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	$ (7,132)		$ 1	6,487	(13,620)
Repurchase and retirement of common stock (in shares)	(900)		(935)
Repurchase and retirement of common stock	$ (65,001)		$ (1)		(65,000)
Stock-based compensation	42,151			42,151
Ending Balance (in shares) at Dec. 26, 2020			58,020
Ending balance at Dec. 26, 2020	1,400,357		$ 58	1,483,509	(88,238)		5,028
Beginning Balance (in shares) at Sep. 26, 2020			57,957
Beginning balance at Sep. 26, 2020	1,316,831		$ 58	1,466,920	(155,260)		5,113
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	114,368				114,368
Change in unrealized gain (loss) on marketable securities, net of tax	(513)						(513)
Change in foreign currency translation adjustments	428						428
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)			522
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	$ (9,126)		$ 1	3,220	(12,347)
Repurchase and retirement of common stock (in shares)	(500)		(459)
Repurchase and retirement of common stock	$ (35,000)		$ (1)		(34,999)
Stock-based compensation	13,369			13,369
Ending Balance (in shares) at Dec. 26, 2020			58,020
Ending balance at Dec. 26, 2020	$ 1,400,357		$ 58	$ 1,483,509	$ (88,238)		$ 5,028