Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (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
Lighting Segment [Member]
Net Sales	58,210	64,795	116,646	132,436
Lighting Segment [Member] | Transferred at Point in Time [Member]
Net Sales	48,366	54,619	96,577	112,271
Lighting Segment [Member] | Transferred over Time [Member]
Net Sales	9,844	10,176	20,069	20,165
Lighting Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member]
Net Sales	47,580	53,116	95,009	108,607
Lighting Segment [Member] | Poles, Other Display Solution Elements [Member]
Net Sales	9,945	10,968	20,338	22,351
Lighting Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member]
Net Sales	685	711	1,299	1,478
Display Solutions Segment [Member]
Net Sales	89,524	44,210	169,183	100,010
Display Solutions Segment [Member] | Transferred at Point in Time [Member]
Net Sales	68,046	29,268	130,140	69,256
Display Solutions Segment [Member] | Transferred over Time [Member]
Net Sales	21,478	14,942	39,043	30,754
Display Solutions Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member]
Net Sales	9,310	8,791	17,746	17,724
Display Solutions Segment [Member] | Poles, Other Display Solution Elements [Member]
Net Sales	60,726	24,829	116,429	59,698
Display Solutions Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member]
Net Sales	$ 19,488	$ 10,590	$ 35,008	$ 22,588