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Marketable Securities - Investments in Marketable Securities (Details) - USD ($) $ in Thousands | Apr. 29, 2023 | Jan. 28, 2023 | Apr. 30, 2022
--- | --- | --- | ---
Financial Instruments And Marketable Securities [Line Items] |  |  |
Cost or Amortized Cost | $ 49,310 | $ 39,573 | $ 50,997
Gross Unrealized Holding Gains | 385 | 180 | 19
Gross Unrealized Holding Losses | 0 | 0 | (19)
Estimated Fair Value | 49,695 | 39,753 | 50,997
Commercial paper |  |  |
Financial Instruments And Marketable Securities [Line Items] |  |  |
Cost or Amortized Cost | 39,266 | 29,570 | 39,921
Gross Unrealized Holding Gains | 385 | 180 | 19
Gross Unrealized Holding Losses | 0 | 0 | (19)
Estimated Fair Value | 39,651 | 29,750 | 39,921
Fixed income securities |  |  |
Financial Instruments And Marketable Securities [Line Items] |  |  |
Cost or Amortized Cost | 10,044 | 10,003 | 11,076
Gross Unrealized Holding Gains | 0 | 0 | 0
Gross Unrealized Holding Losses | 0 | 0 | 0
Estimated Fair Value | $ 10,044 | $ 10,003 | $ 11,076

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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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