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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 ($)
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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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