Financial Instruments (Details) - USD ($) $ in Thousands	Nov. 27, 2021	Feb. 27, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 12,337
Estimated Fair Value	12,527
Municipal and Corporate Bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	12,337	$ 12,517
Gross Unrealized Gains	223	386
Gross Unrealized Losses	33	10
Estimated Fair Value	$ 12,527	$ 12,893

Amortized cost of 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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Amount of 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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Amount of cumulative unrecognized gain on investment in debt security measured at amortized cost (held-to-maturity) and investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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Amount of cumulative unrecognized loss on investment in debt security measured at amortized cost (held-to-maturity) and 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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