Note 4 - Segment Reporting Information - Summarized Financial Information by Operating Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Net Sales	$ 147,734	$ 109,005	$ 285,829	$ 232,446
Operating Income (Loss)	8,459	7,819	17,590	18,847
Capital Expenditures	1,066	1,956	1,825	3,349
Depreciation and amortization	3,018	2,357	5,958	4,728
Corporate and Eliminations [Member]
Operating Income (Loss)	(5,640)	(4,339)	(9,975)	(9,283)
Capital Expenditures	28	276	28	288
Depreciation and amortization	81	75	174	161
Lighting Segment [Member]
Net Sales	58,210	64,795	116,646	132,436
Lighting Segment [Member] | Operating Segments [Member]
Operating Income (Loss)	5,972	8,856	11,731	17,609
Capital Expenditures	509	1,151	1,221	2,013
Depreciation and amortization	1,281	1,293	2,493	2,602
Display Solutions Segment [Member]
Net Sales	89,524	44,210	169,183	100,010
Display Solutions Segment [Member] | Operating Segments [Member]
Operating Income (Loss)	8,127	3,302	15,834	10,521
Capital Expenditures	529	529	576	1,048
Depreciation and amortization	$ 1,656	$ 989	$ 3,291	$ 1,965