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Summary of Significant Accounting Policies (Amortized Cost, Fair Value, and Corresponding Amount of Gross Unrealized Gains and Losses Recognized in AOCI of Available-for-Sale Security) (Details) - USD ($) $ in Thousands	Jan. 28, 2024	Jan. 29, 2023
Debt Securities, Available-for-sale [Line Items]
Estimated Fair Value	$ 4,986	$ 5,539
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	28,396	25,031
Gross Unrealized Losses
Estimated Fair Value	28,396	25,031
Fair Value, Inputs, Level 3 [Member] | Corporate Trust [Member]
Debt Securities, Available-for-sale [Line Items]
Cost or Amortized Cost	5,556	5,737
Gross Unrealized Losses	(570)	(198)
Estimated Fair Value	$ 4,986	$ 5,539

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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).

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