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Note 7 - Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Sep. 30, 2023
Notes Tables |
Schedule of Goodwill [Table Text Block] |
Goodwill |  |  |  |  |  | Display |  |  |  |  |
(In thousands) |  | Lighting |  |  | Solutions |  |  |  |  |
|  | Segment |  |  | Segment |  |  | Total |
Balance as of September 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 70,971 |  |  | $ | 63,347 |  |  | $ | 134,318 |
Accumulated impairment losses |  |  | (61,763 | ) |  |  | (27,525 | ) |  |  | (89,288 | )
Goodwill, net as of September 30, 2023 |  | $ | 9,208 |  |  | $ | 35,822 |  |  | $ | 45,030 |
Balance as of June 30, 2023 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 70,971 |  |  | $ | 63,347 |  |  | $ | 134,318 |
Accumulated impairment losses |  |  | (61,763 | ) |  |  | (27,525 | ) |  |  | (89,288 | )
Goodwill, net as of June 30, 2023 |  | $ | 9,208 |  |  | $ | 35,822 |  |  | $ | 45,030 |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
Other Intangible Assets |  | September 30, 2023 |
(In thousands) |  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Net |
|  | Amount |  |  | Amortization |  |  | Amount |
Amortized Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 62,083 |  |  | $ | 18,671 |  |  | $ | 43,412 |
Patents |  |  | 268 |  |  |  | 268 |  |  |  | - |
LED technology firmware, software |  |  | 20,966 |  |  |  | 16,079 |  |  |  | 4,887 |
Trade name |  |  | 2,658 |  |  |  | 1,183 |  |  |  | 1,475 |
Non-compete |  |  | 260 |  |  |  | 123 |  |  |  | 137 |
Total Amortized Intangible Assets |  |  | 86,235 |  |  |  | 36,324 |  |  |  | 49,911 |
Indefinite-lived Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Trademarks and trade names |  |  | 12,102 |  |  |  | - |  |  |  | 12,102 |
Total indefinite-lived Intangible Assets |  |  | 12,102 |  |  |  | - |  |  |  | 12,102 |
Total Other Intangible Assets |  | $ | 98,337 |  |  | $ | 36,324 |  |  | $ | 62,013 |
Other Intangible Assets |  | June 30, 2023 |
(In thousands) |  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Net |
|  | Amount |  |  | Amortization |  |  | Amount |
Amortized Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 62,083 |  |  | $ | 17,817 |  |  | $ | 44,266 |
Patents |  |  | 268 |  |  |  | 268 |  |  |  | - |
LED technology firmware, software |  |  | 20,966 |  |  |  | 15,783 |  |  |  | 5,183 |
Trade name |  |  | 2,658 |  |  |  | 1,156 |  |  |  | 1,502 |
Non-compete |  |  | 260 |  |  |  | 110 |  |  |  | 150 |
Total Amortized Intangible Assets |  |  | 86,235 |  |  |  | 35,134 |  |  |  | 51,101 |
Indefinite-lived Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Trademarks and trade names |  |  | 12,102 |  |  |  | - |  |  |  | 12,102 |
Total indefinite-lived Intangible Assets |  |  | 12,102 |  |  |  | - |  |  |  | 12,102 |
Total Other Intangible Assets |  | $ | 98,337 |  |  | $ | 35,134 |  |  | $ | 63,203 |
Finite-Lived Intangible Assets Amortization Expense [Table Text Block] |
|  | Three Months Ended |
|  | September 30 |
(In thousands) |  | 2023 |  |  | 2022 |
Amortization Expense of Other Intangible Assets |  | $ | 1,190 |  |  | $ | 1,190 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
(In thousands) |  |  |  |
2024 |  | $ | 3,571 |
2025 |  | $ | 4,760 |
2026 |  | $ | 4,760 |
2027 |  | $ | 4,754 |
2028 |  | $ | 4,708 |
After 2028 |  | $ | 27,358 |

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