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Marketable Securities (Narrative) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Jun. 25, 2022 | Mar. 26, 2022
Debt Securities, Available-for-sale [Line Items] |  |
Gross unrealized losses | $ 2,803 | $ 2,325
Amortized cost on available for sale securities held at gross unrealized loss | 77,200 | 75,500
Securities in a continuous unrealized loss position for more than 12 months, amortized cost | 9,000 | 3,500
Securities in a continuous unrealized loss position for more than 12 months, aggregate unrealized loss | $ 400 | $ 100
Minimum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Maturity period for highly-rated securities | 1 year |
Maximum |  |
Debt Securities, Available-for-sale [Line Items] |  |
Maturity period for highly-rated securities | 3 years |

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- Definition Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922890-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 55 -Paragraph 8 -URI https://asc.fasb.org/extlink&oid=121590138&loc=SL82922954-210456 + Details
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