Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2025	Dec. 31, 2024
Revenue	$ 147,002	$ 147,734	$ 304,251	$ 285,829
Lighting Segment [Member]
Revenue	66,673	58,210	135,726	116,646
Lighting Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member]
Revenue	54,554	47,580	110,301	95,009
Lighting Segment [Member] | Poles, Other Display Solution Elements [Member]
Revenue	11,510	9,945	24,244	20,338
Lighting Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member]
Revenue	609	685	1,181	1,299
Display Solutions Segment [Member]
Revenue	80,329	89,524	168,525	169,183
Display Solutions Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member]
Revenue	4,739	9,310	8,089	17,746
Display Solutions Segment [Member] | Poles, Other Display Solution Elements [Member]
Revenue	61,719	60,726	132,079	116,429
Display Solutions Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member]
Revenue	13,871	19,488	28,357	35,008
Transferred at Point in Time [Member] | Lighting Segment [Member]
Revenue	55,724	48,366	113,034	96,577
Transferred at Point in Time [Member] | Display Solutions Segment [Member]
Revenue	67,543	68,046	145,206	130,140
Transferred over Time [Member] | Lighting Segment [Member]
Revenue	10,949	9,844	22,692	20,069
Transferred over Time [Member] | Display Solutions Segment [Member]
Revenue	$ 12,786	$ 21,478	$ 23,319	$ 39,043