Summary of Significant Accounting Policies (Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Feb. 03, 2024	Jan. 28, 2023
Corporate Bond Securities [Member] \| Fair Value, Inputs, Level 2 [Member]
Significant Accounting Policies [Line Items]
Amortized Cost	$ 280,067	$ 66,845
Gross Unrealized Gains	0	0
Gross Unrealized Losses	154	292
Fair Market Value	279,913	66,553
Municipal Bonds [Member]
Significant Accounting Policies [Line Items]
Amortized Cost	280,339	66,845
Gross Unrealized Gains	0	0
Gross Unrealized Losses	154	292
Fair Market Value	280,185	$ 66,553
Municipal Bonds [Member] \| Fair Value, Inputs, Level 2 [Member]
Significant Accounting Policies [Line Items]
Amortized Cost	272
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Market Value	272
Other Long-term Investments [Member]
Significant Accounting Policies [Line Items]
Amortized Cost	7,791
Gross Unrealized Gains	0
Gross Unrealized Losses	8
Fair Market Value	7,783
Other Long-term Investments [Member] \| Fair Value, Inputs, Level 2 [Member]
Significant Accounting Policies [Line Items]
Amortized Cost	7,791
Gross Unrealized Gains	0
Gross Unrealized Losses	8
Corporate Bond Securities - Long Term [Member] \| Fair Value, Inputs, Level 2 [Member]
Significant Accounting Policies [Line Items]
Fair Market Value	$ 7,783

Significant Accounting Policies [Line Items]

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- Definition

Amount of accumulated unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5A
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-5A

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-Section 50
-Paragraph 5
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-Publisher FASB
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- Definition

Amount of accumulated unrealized loss on investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5A
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-5A

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (c)
-Publisher FASB
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- Definition

Amount, before other-than-temporary impairment (OTTI) accretion, of investment in debt securities measured at amortized cost (held-to-maturity).

+ References

No definition available.

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(1))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 320
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481800/320-10-50-5A

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(6))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479853/942-210-S99-1

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