Consolidated Condensed Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income / (Loss)
Balance (in shares) at Mar. 28, 2020		58,242,000
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	77,695			77,695
Change in unrealized gain (loss) on marketable securities, net of tax	6,917				6,917
Change in foreign currency translation adjustments	1,665				1,665
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)		191,000
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	1,994		3,267	(1,273)
Repurchase and retirement of common stock (in shares)		(476,000)
Repurchase and retirement of common stock	(30,001)	$ 0		(30,001)
Stock-based compensation	28,782		28,782
Balance (in shares) at Sep. 26, 2020		57,957,000
Ending balance at Sep. 26, 2020	1,316,831	$ 58	1,466,920	(155,260)	5,113
Balance (in shares) at Jun. 27, 2020		58,381,000
Beginning balance at Jun. 27, 2020	1,272,289	$ 58	1,451,239	(184,049)	5,041
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	59,486			59,486
Change in unrealized gain (loss) on marketable securities, net of tax	(579)				(579)
Change in foreign currency translation adjustments	651				651
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)		52,000
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	(491)		205	(696)
Repurchase and retirement of common stock (in shares)		(476,000)
Repurchase and retirement of common stock	(30,001)	$ 0		(30,001)
Stock-based compensation	15,476		15,476
Balance (in shares) at Sep. 26, 2020		57,957,000
Ending balance at Sep. 26, 2020	1,316,831	$ 58	1,466,920	(155,260)	5,113
Balance (in shares) at Mar. 27, 2021		57,652,000
Beginning balance at Mar. 27, 2021	1,389,005	$ 58	1,498,761	(112,689)	2,875
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	102,305			102,305
Change in unrealized gain (loss) on marketable securities, net of tax	(2,453)				(2,453)
Change in foreign currency translation adjustments	(217)				(217)
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)		147,000
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	$ 418		3,203	(2,785)
Repurchase and retirement of common stock (in shares)	(700,000)	(671,000)
Repurchase and retirement of common stock	$ (52,504)	$ (1)		(52,503)
Stock-based compensation	31,536		31,536
Balance (in shares) at Sep. 25, 2021		57,128,000
Ending balance at Sep. 25, 2021	1,468,090	$ 57	1,533,500	(65,672)	205
Balance (in shares) at Jun. 26, 2021		57,547,000
Beginning balance at Jun. 26, 2021	1,406,731	$ 58	1,514,491	(109,754)	1,936
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	85,096			85,096
Change in unrealized gain (loss) on marketable securities, net of tax	(1,566)				(1,566)
Change in foreign currency translation adjustments	(165)				(165)
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes (in shares)		86,000
Issuance of stock under stock option plans and other, net of shares withheld for employee taxes	1,446		2,458	(1,012)
Repurchase and retirement of common stock (in shares)		(505,000)
Repurchase and retirement of common stock	(40,003)	$ (1)		(40,002)
Stock-based compensation	16,551		16,551
Balance (in shares) at Sep. 25, 2021		57,128,000
Ending balance at Sep. 25, 2021	$ 1,468,090	$ 57	$ 1,533,500	$ (65,672)	$ 205