Note 9 - Goodwill and Other Intangible Assets (Tables)
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9 Months Ended |
Mar. 31, 2026 |
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| Notes Tables |
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| Goodwill [Table Text Block] |
| | | | | | | Display | | | | | |
| | | Lighting | | | Solutions | | | | | |
| (In thousands) | | Segment | | | Segment | | | Total | |
| Balance as of March 31, 2026 | | | | | | | | | | | | |
| Goodwill | | $ | 70,971 | | | $ | 82,865 | | | $ | 153,836 | |
| Goodwill acquired, net of adjustments | | | - | | | | 143,914 | | | | 143,914 | |
| Foreign currency translation | | | - | | | | (18 | ) | | | (18 | ) |
| Accumulated impairment losses | | | (61,763 | ) | | | (27,525 | ) | | | (89,288 | ) |
| Goodwill, net as of March 31, 2026 | | $ | 9,208 | | | $ | 199,236 | | | $ | 208,444 | |
| | | | | | | | | | | | | |
| Balance as of June 30, 2025 | | | | | | | | | | | | |
| Goodwill | | $ | 70,971 | | | $ | 75,714 | | | $ | 146,685 | |
| Goodwill acquired, net of adjustments | | | - | | | | 6,769 | | | | 6,769 | |
| Foreign currency translation | | | - | | | | 382 | | | | 382 | |
| Accumulated impairment losses | | | (61,763 | ) | | | (27,525 | ) | | | (89,288 | ) |
| Goodwill, net as of June 30, 2025 | | $ | 9,208 | | | $ | 55,340 | | | $ | 64,548 | |
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| Intangible Asset and Goodwill [Table Text Block] |
| (In thousands) | | March 31, 2026 | |
| | | Gross | | | | | | | | | |
| | | Carrying | | | Accumulated | | | Net | |
| | | Amount | | | Amortization | | | Amount | |
| | | | | | | | | | | | | |
| Amortized Intangible Assets | | | | | | | | | | | | |
| Customer relationships | | $ | 162,609 | | | $ | 28,541 | | | $ | 134,068 | |
| Patents | | | 268 | | | | 268 | | | | - | |
| LED technology, software | | | 41,926 | | | | 19,973 | | | | 21,953 | |
| Trade name | | | 3,685 | | | | 1,563 | | | | 2,122 | |
| Non-compete | | | 1,886 | | | | 396 | | | | 1,490 | |
| Total Amortized Intangible Assets | | $ | 210,374 | | | $ | 50,741 | | | $ | 159,633 | |
| | | | | | | | | | | | | |
| Indefinite-lived Intangible Assets | | | | | | | | | | | | |
| Trademarks and trade names | | | 40,582 | | | | - | | | | 40,582 | |
| Total indefinite-lived Intangible Assets | | | 40,582 | | | | - | | | | 40,582 | |
| | | | | | | | | | | | | |
| Total Other Intangible Assets | | $ | 250,956 | | | $ | 50,741 | | | $ | 200,215 | |
| (In thousands) | | June 30, 2025 | |
| | | Gross | | | | | | | | | |
| | | Carrying | | | Accumulated | | | Net | |
| | | Amount | | | Amortization | | | Amount | |
| | | | | | | | | | | | | |
| Amortized Intangible Assets | | | | | | | | | | | | |
| Customer relationships | | $ | 78,485 | | | $ | 25,251 | | | $ | 53,234 | |
| Patents | | | 268 | | | | 268 | | | | - | |
| LED technology, software | | | 24,126 | | | | 18,694 | | | | 5,432 | |
| Trade name | | | 3,704 | | | | 1,404 | | | | 2,300 | |
| Non-compete | | | 590 | | | | 280 | | | | 310 | |
| Total Amortized Intangible Assets | | $ | 107,173 | | | $ | 45,897 | | | $ | 61,276 | |
| | | | | | | | | | | | | |
| Indefinite-lived Intangible Assets | | | | | | | | | | | | |
| Trademarks and trade names | | | 16,982 | | | | - | | | | 16,982 | |
| Total indefinite-lived Intangible Assets | | | 16,982 | | | | - | | | | 16,982 | |
| | | | | | | | | | | | | |
| Total Other Intangible Assets | | $ | 124,155 | | | $ | 45,897 | | | $ | 78,258 | |
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| Intangible Asset, Finite-Lived, Amortization Expense [Table Text Block] |
| | | Three Months Ended | | | Nine Months Ended | |
| | | March 31, | | | March 31, | |
| (In thousands) | | 2026 | | | 2025 | | | 2026 | | | 2025 | |
| | | | | | | | | | | | | | | | | |
| Amortization expense of other intangible assets | | $ | 1,732 | | | $ | 1,448 | | | $ | 4,844 | | | $ | 4,264 | |
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| Intangible Asset, Finite-Lived, and Capitalized Cost, Software to be Sold, Leased, or Marketed, Estimated Amortization Expense [Table Text Block] |
| (In thousands) | | | | |
| | | | | |
| 2026 | | $ | 8,507 | |
| 2027 | | $ | 14,430 | |
| 2028 | | $ | 13,990 | |
| 2029 | | $ | 13,350 | |
| 2030 | | $ | 13,343 | |
| After 2030 | | $ | 101,046 | |
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