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Note 1 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 30, 2024 | Jun. 30, 2023
Net sales | $ 469,638 | $ 496,979
Lighting Segment [Member] |  |
Net sales | 262,413 | 272,451
Lighting Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member] |  |
Net sales | 215,758 | 224,529
Lighting Segment [Member] | Legacy Products [Member] |  |
Net sales | 43,719 | 44,473
Lighting Segment [Member] | Turnkey Services and Other [Member] |  |
Net sales | 2,936 | 3,449
Display Solutions Segment [Member] |  |
Net sales | 207,225 | 224,528
Display Solutions Segment [Member] | LED Lighting, Digital Signage, Electronic Circuit Boards [Member] |  |
Net sales | 32,521 | 25,011
Display Solutions Segment [Member] | Legacy Products [Member] |  |
Net sales | 132,604 | 156,057
Display Solutions Segment [Member] | Turnkey Services and Other [Member] |  |
Net sales | 42,100 | 43,460
Transferred at Point in Time [Member] | Lighting Segment [Member] |  |
Net sales | 219,820 | 234,736
Transferred at Point in Time [Member] | Display Solutions Segment [Member] |  |
Net sales | 151,972 | 177,564
Transferred over Time [Member] | Lighting Segment [Member] |  |
Net sales | 42,593 | 37,715
Transferred over Time [Member] | Display Solutions Segment [Member] |  |
Net sales | $ 55,253 | $ 46,964

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