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Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended			12 Months Ended
	May 28, 2022	Feb. 26, 2022	May 29, 2021	May 28, 2022	May 29, 2021	May 30, 2020
Income Taxes [Abstract]
Discrete income tax benefit	$ 200,000		$ 12,800,000
Income tax receivable	34,000,000.0		36,100,000	$ 34,000,000.0	$ 36,100,000
Tax benefit related to stock-based compensation for nonqualified stock options expensed and for eligible disqualifying ISO exercises and shares issued under ESPP				2,000,000.0	400,000
Foreign net operating loss carryforwards	64,267,000			64,267,000
Tax credit carryforward	600,000			600,000
Undistributed earnings of foreign subsidiaries	27,300,000			27,300,000
Unrecognized tax benefits	908,000		872,000	908,000	872,000	$ 848,000
Unrecognized tax benefits, accrued interest	$ 36,000		$ 24,000	36,000	$ 24,000
Change in valuation allowance		$ (4,900,000)
Income tax benefit from reversal of foreign valuation allowance				$ 2,600,000

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Discrete Income Tax Benefit, Cares Act

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Income tax benefit from reversal of foreign valuation allowance.

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Amount of deferred tax expense from write-off of the deferred tax asset related to deductible stock options at exercise.

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Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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The amount of the tax credit carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

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