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Summary of Significant Accounting Policies (Future Principal Receipts Related to Available-For-Sale Security by Contractual Maturity) (Details) $ in Thousands	Feb. 02, 2020 USD ($)
Available For Sale Securities [Abstract]
Amortized Cost, Within one year	$ 131
Amortized Cost, After one year through five years	910
Amortized Cost, After five years through ten years	1,438
Amortized Cost, After ten years	3,699
Amortized Cost, Total	6,178
Estimated Fair Value, Within one year	145
Estimated Fair Value, After one year through five years	978
Estimated Fair Value, After five years through ten years	1,505
Estimated Fair Value, After ten years	3,804
Estimated Fair Value, Total	$ 6,432

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Fair value of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), with single maturity date and allocated without single maturity date, maturing in sixth through tenth fiscal year following latest fiscal year. Excludes interim and annual periods when interim period is reported on rolling approach, from latest statement of financial position date.

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