Financial Instruments (Details 2) - USD ($) $ in Thousands	Mar. 02, 2019	Mar. 03, 2018
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 12,481	$ 9,183
Estimated Fair Value	12,432	$ 9,053
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost, Due within one year	405
Amortized Cost, Due after one year through five years	9,479
Amortized Cost, Due after five years through 10 years	1,834
Amortized Cost, Due after 10 years through 15 years	0
Amortized Cost, Due beyond 15 years	763
Amortized Cost	12,481
Estimated Market Value, Due within one year	402
Estimated Market Value, Due after one year through five years	9,439
Estimated Market Value, Due after five years through 10 years	1,834
Estimated Market Value, Due after 10 years through 15 years	0
Estimated Market Value, Due beyond 15 years	757
Estimated Fair Value	$ 12,432

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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