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Summary of Significant Accounting Policies (Fair Value of Financial Instruments) (Details) - Fair Value, Inputs, Level 2 [Member] - USD ($) $ in Thousands	Feb. 01, 2025	Feb. 03, 2024
Significant Accounting Policies [Line Items]
Amortized Cost		$ 7,791
Gross Unrealized Gains		0
Gross Unrealized Losses		8
Fair Market Value		7,783
Corporate Bond Securities [Member]
Significant Accounting Policies [Line Items]
Amortized Cost	$ 197,073	280,067
Gross Unrealized Gains		0
Gross Unrealized Losses	115	154
Fair Market Value	196,958	279,913
Municipal Bonds [Member]
Significant Accounting Policies [Line Items]
Amortized Cost		272
Gross Unrealized Gains		0
Gross Unrealized Losses		0
Fair Market Value		272
Short-Term Investments
Significant Accounting Policies [Line Items]
Amortized Cost	197,073	280,339
Gross Unrealized Gains	0	0
Gross Unrealized Losses	115	154
Fair Market Value	$ 196,958	280,185
Corporate Bond Securities - Long Term [Member]
Significant Accounting Policies [Line Items]
Amortized Cost		7,791
Gross Unrealized Gains		0
Gross Unrealized Losses		8
Fair Market Value		$ 7,783

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