Note 7 - Goodwill and Other Intangible Assets (Details Textual) $ in Millions		9 Months Ended
Mar. 01, 2023 USD ($)	Mar. 31, 2023
Number of Reporting Units		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]
Number of Reporting Units	1	1
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	$ 34.4
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	21.00%
Display Solutions Segment [Member]
Number of Reporting Units		2
Display Solutions Segment [Member] \| First Reporting Unit [Member]
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	$ 13.6
Reporting Units, Percentage of Fair Value in Excess of Carrying Amount	5426.00%
Display Solutions Segment [Member] \| Second Reporting Unit [Member]
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount	$ 99.4
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount	15.00%

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

No definition available.

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

No definition available.

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

No definition available.

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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.

No definition available.

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

No definition available.

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

No definition available.

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