Financial Instruments Financial Instruments (Details 3) - USD ($) $ in Thousands	Feb. 25, 2023	Feb. 26, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	$ 8,062	$ 19,288
Municipal and corporate bonds	9,945	11,784
Cash surrender value of life insurance	8,282	17,831
Deferred Compensation Liab FV Disclosure	9,515	12,491
Quoted Prices in Active Markets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	8,062	19,288
Municipal and corporate bonds	0	0
Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Money market funds	0	0
Municipal and corporate bonds	9,945	11,784
Cash surrender value of life insurance	8,282	17,831
Deferred Compensation Liab FV Disclosure	9,515	12,491
Foreign Exchange Forward [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	206	161
Foreign Exchange Forward [Member] | Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	206	161
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	1,817	718
Interest Rate Swap [Member] | Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	1,817	718
Aluminum Hedging Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		2,133
Derivative Liability	1,075
Aluminum Hedging Contract | Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset		$ 2,133
Derivative Liability	$ 1,075