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Marketable Securities (Schedule of Available-for-sale Securities) (Details) - USD ($) $ in Thousands | Mar. 25, 2023 | Mar. 26, 2022
--- | --- | ---
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | $ 73,376 | $ 76,673
Gross Unrealized Gains | 108 | 2
Gross Unrealized Losses | (1,997) | (2,325)
Estimated Fair Value (Net Carrying Amount) | 71,487 | 74,350
Corporate debt securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 66,753 | 70,296
Gross Unrealized Gains | 91 | 2
Gross Unrealized Losses | (1,825) | (2,133)
Estimated Fair Value (Net Carrying Amount) | 65,019 | 68,165
Non-U.S. government securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 510 | 509
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (3) | (9)
Estimated Fair Value (Net Carrying Amount) | 507 | 500
U.S. Treasury securities |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 5,728 | 5,483
Gross Unrealized Gains | 17 | 0
Gross Unrealized Losses | (151) | (169)
Estimated Fair Value (Net Carrying Amount) | 5,594 | 5,314
Agency discount notes |  |
Debt Securities, Available-for-sale [Line Items] |  |
Amortized Cost | 385 | 385
Gross Unrealized Gains | 0 | 0
Gross Unrealized Losses | (18) | (14)
Estimated Fair Value (Net Carrying Amount) | $ 367 | $ 371

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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 https://asc.fasb.org/extlink&oid=126970911&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 https://asc.fasb.org/extlink&oid=126970911&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 https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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