Financial Instruments (Details) - USD ($) $ in Thousands	Feb. 25, 2023	Feb. 26, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Gross Unrealized Gains	$ 0	$ 45
Gross Unrealized Losses	702	123
Municipal bonds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Amortized Cost	10,647	11,862
Estimated Fair Value	$ 9,945	$ 11,784