Note 3 - Segment Reporting Information - Intersegment Revenues (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2024	Mar. 31, 2023
Net sales	$ 108,186	$ 117,470	$ 340,632	$ 373,343
Lighting Segment [Member]
Net sales	64,882	66,707	197,318	201,074
Display Solutions Segment [Member]
Net sales	43,304	50,763	143,314	172,269
Intersegment Eliminations [Member] \| Lighting Segment [Member]
Net sales	6,318	5,101	18,468	16,312
Intersegment Eliminations [Member] \| Display Solutions Segment [Member]
Net sales	$ 96	$ 175	$ 536	$ 139

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details