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Marketable Securities (Schedule of Available-for-sale Securities) (Details) - USD ($) $ in Thousands | Dec. 25, 2021 | Mar. 27, 2021
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 76,329 | $ 365,192
Gross Unrealized Gains | 45 | 3,579
Gross Unrealized Losses | (537) | (315)
Estimated Fair Value (Net Carrying Amount) | 75,837 | 368,456
Corporate debt securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 70,243 | 348,971
Gross Unrealized Gains | 45 | 3,403
Gross Unrealized Losses | (499) | (313)
Estimated Fair Value (Net Carrying Amount) | 69,789 | 352,061
Non-U.S. government securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 509 | 13,462
Gross Unrealized Gains | 0 | 172
Gross Unrealized Losses | (1) | (1)
Estimated Fair Value (Net Carrying Amount) | 508 | 13,633
U.S. Treasury securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 5,377 |
Gross Unrealized Gains | 0 |
Gross Unrealized Losses | (35) |
Estimated Fair Value (Net Carrying Amount) | 5,342 |
Agency discount notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 200 | 2,759
Gross Unrealized Gains | 0 | 4
Gross Unrealized Losses | (2) | (1)
Estimated Fair Value (Net Carrying Amount) | $ 198 | $ 2,762

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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- Definition Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123581744&loc=d3e27161-111563 + Details
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- Definition Amortized cost excluding accrued interest, after allowance for credit loss, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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