Note 4 - Segment Reporting Information - Intersegment Revenues (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Inter-segment Revenues	$ 147,002	$ 147,734	$ 304,251	$ 285,829
Lighting Segment [Member]
Inter-segment Revenues	66,673	58,210	135,726	116,646
Display Solutions Segment [Member]
Inter-segment Revenues	80,329	89,524	168,525	169,183
Intersegment Eliminations [Member] | Lighting Segment [Member]
Inter-segment Revenues	3,249	6,053	6,494	12,037
Intersegment Eliminations [Member] | Display Solutions Segment [Member]
Inter-segment Revenues	$ 429	$ 133	$ 543	$ 304