Note 7 - Goodwill and Other Intangible Assets (Details Textual) $ in Millions			12 Months Ended
Mar. 01, 2024 USD ($)	Mar. 01, 2023 USD ($)	Jun. 30, 2024
Number of Reporting Units	3	3	3
First Indefinite Lived Intangible Asset [Member]
Intangible Assets, Indefinite-lived, Amount of Fair Value in Excess of Carrying Amount		$ 17.0
Intangible Assets, Indefinite-lived, Percentage of Fair Value in Excess of Carrying Amount		399.00%
Second Indefinite Lived Intangible Asset [Member]
Intangible Assets, Indefinite-lived, Amount of Fair Value in Excess of Carrying Amount		$ 10.5
Intangible Assets, Indefinite-lived, Percentage of Fair Value in Excess of Carrying Amount		21.00%
Lighting Segment [Member]
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	$ 37.3	$ 34.4
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	23.00%	21.00%
Display Solutions Segment [Member]
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	$ 22.7
Display Solutions Segment [Member] \| Second Reporting Unit [Member]
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	$ 95.5	$ 99.4
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	19.00%	15.00%
Display Solutions Segment [Member] \| First Reporting Unit [Member]
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount		$ 13.6

Amount of fair value of indefinite lived intangible assets in excess of carrying amount.

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Percentage of fair value of indefinite lives intangible assets in excess of carrying amount.

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Number of reporting units tested for impairment of goodwill. A reporting unit is an operating segment or one level below an operating segment.

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Amount of fair value of reporting unit in excess of carrying amount.

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Percentage of fair value of reporting unit in excess of carrying amount.

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