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Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2024 | Mar. 31, 2023
Net Sales | $ 108,186 | $ 117,470 | $ 340,632 | $ 373,343
Lighting Segment [Member] |  |  |  |
Net Sales | 64,882 | 66,707 | 197,318 | 201,074
Lighting Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member] |  |  |  |
Net Sales | 53,917 | 55,894 | 162,524 | 165,839
Lighting Segment [Member] | Poles, Other Display Solution Elements [Member] |  |  |  |
Net Sales | 10,181 | 9,920 | 32,532 | 32,681
Lighting Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member] |  |  |  |
Net Sales | 784 | 893 | 2,262 | 2,554
Display Solutions Segment [Member] |  |  |  |
Net Sales | 43,304 | 50,763 | 143,314 | 172,269
Display Solutions Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member] |  |  |  |
Net Sales | 8,321 | 4,907 | 26,045 | 17,883
Display Solutions Segment [Member] | Poles, Other Display Solution Elements [Member] |  |  |  |
Net Sales | 26,628 | 37,019 | 86,326 | 120,173
Display Solutions Segment [Member] | Project Management, Installation Services, Shipping and Handling [Member] |  |  |  |
Net Sales | 8,355 | 8,837 | 30,943 | 34,213
Transferred at Point in Time [Member] | Lighting Segment [Member] |  |  |  |
Net Sales | 53,619 | 57,249 | 165,890 | 173,917
Transferred at Point in Time [Member] | Display Solutions Segment [Member] |  |  |  |
Net Sales | 30,304 | 42,378 | 99,560 | 136,894
Transferred over Time [Member] | Lighting Segment [Member] |  |  |  |
Net Sales | 11,263 | 9,458 | 31,428 | 27,157
Transferred over Time [Member] | Display Solutions Segment [Member] |  |  |  |
Net Sales | $ 13,000 | $ 8,385 | $ 43,754 | $ 35,375

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