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Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Net Sales | $ 109,005 | $ 128,804 | $ 232,446 | $ 255,873
Lighting Segment [Member] |  |  |  |
Net Sales | 64,795 | 66,833 | 132,436 | 134,366
Lighting Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member] |  |  |  |
Net Sales | 53,116 | 54,410 | 108,607 | 109,945
Lighting Segment [Member] | Poles, Other Display Solution Elements [Member] |  |  |  |
Net Sales | 10,968 | 11,632 | 22,351 | 22,761
Lighting Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member] |  |  |  |
Net Sales | 711 | 791 | 1,478 | 1,660
Display Solutions Segment [Member] |  |  |  |
Net Sales | 44,210 | 61,971 | 100,010 | 121,507
Display Solutions Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member] |  |  |  |
Net Sales | 8,791 | 5,801 | 17,724 | 12,976
Display Solutions Segment [Member] | Poles, Other Display Solution Elements [Member] |  |  |  |
Net Sales | 24,829 | 41,683 | 59,698 | 83,154
Display Solutions Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member] |  |  |  |
Net Sales | 10,590 | 14,487 | 22,588 | 25,377
Transferred at Point in Time [Member] | Lighting Segment [Member] |  |  |  |
Net Sales | 54,619 | 58,591 | 112,271 | 116,668
Transferred at Point in Time [Member] | Display Solutions Segment [Member] |  |  |  |
Net Sales | 29,268 | 47,027 | 69,256 | 94,516
Transferred over Time [Member] | Lighting Segment [Member] |  |  |  |
Net Sales | 10,176 | 8,242 | 20,165 | 17,698
Transferred over Time [Member] | Display Solutions Segment [Member] |  |  |  |
Net Sales | $ 14,942 | $ 14,944 | $ 30,754 | $ 26,991

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