Financial Instruments (Details 2) - USD ($) $ in Thousands	Feb. 26, 2022	Feb. 27, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 11,862	$ 12,517
Estimated Fair Value	11,784	$ 12,893
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Due within one year	1,206
Amortized Cost, Due after one year through five years	9,158
Amortized Cost, Due after five years through 10 years	698
Amortized Cost, Due after 15 years	800
Amortized Cost	11,862
Estimated Market Value, Due within one year	1,212
Estimated Market Value, Due after one year through five years	9,109
Estimated Market Value, Due after five years through 10 years	669
Estimated Market Value, After 15 years	794
Estimated Fair Value	$ 11,784

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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