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Note 7 - Goodwill and Other Intangible Assets (Tables) | 6 Months Ended
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Dec. 31, 2019
Notes Tables |
Schedule of Goodwill [Table Text Block] |
Goodwill |  |  |  |  |  |  |  |  |  |  |  |
(In thousands) |  | Lighting |  |  | Graphics |  |  |  |  |
|  | Segment |  |  | Segment |  |  | Total |
Balance as of June 30, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 94,564 |  |  | $ | 28,690 |  |  | $ | 123,254 |
Accumulated impairment losses |  |  | (85,356 | ) |  |  | (27,525 | ) |  |  | (112,881 | )
Goodwill, net as of June 30, 2019 |  | $ | 9,208 |  |  | $ | 1,165 |  |  | $ | 10,373 |
Balance as of December 31, 2019 |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 94,564 |  |  | $ | 28,690 |  |  | $ | 123,254 |
Accumulated impairment losses |  |  | (85,356 | ) |  |  | (27,525 | ) |  |  | (112,881 | )
Goodwill, net as of December 31, 2019 |  | $ | 9,208 |  |  | $ | 1,165 |  |  | $ | 10,373 |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
Other Intangible Assets |  | December 31, 2019 |
(In thousands) |  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Net |
|  | Amount |  |  | Amortization |  |  | Amount |
Amortized Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 35,563 |  |  | $ | 13,100 |  |  | $ | 22,463 |
Patents |  |  | 338 |  |  |  | 262 |  |  |  | 76 |
LED technology firmware, software |  |  | 16,066 |  |  |  | 12,610 |  |  |  | 3,456 |
Trade name |  |  | 2,658 |  |  |  | 774 |  |  |  | 1,884 |
Total Amortized Intangible Assets |  |  | 54,625 |  |  |  | 26,746 |  |  |  | 27,879 |
Indefinite-lived Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Trademarks and trade names |  |  | 3,422 |  |  |  | - |  |  |  | 3,422 |
Total indefinite-lived Intangible Assets |  |  | 3,422 |  |  |  | - |  |  |  | 3,422 |
Total Other Intangible Assets |  | $ | 58,047 |  |  | $ | 26,746 |  |  | $ | 31,301 |
Other Intangible Assets |  | June 30, 2019 |
(In thousands) |  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Net |
|  | Amount |  |  | Amortization |  |  | Amount |
Amortized Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 35,563 |  |  | $ | 12,070 |  |  | $ | 23,493 |
Patents |  |  | 338 |  |  |  | 247 |  |  |  | 91 |
LED technology firmware, software |  |  | 16,066 |  |  |  | 12,364 |  |  |  | 3,702 |
Trade name |  |  | 2,658 |  |  |  | 719 |  |  |  | 1,939 |
Total Amortized Intangible Assets |  |  | 54,625 |  |  |  | 25,400 |  |  |  | 29,225 |
Indefinite-lived Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Trademarks and trade names |  |  | 3,422 |  |  |  | - |  |  |  | 3,422 |
Total indefinite-lived Intangible Assets |  |  | 3,422 |  |  |  | - |  |  |  | 3,422 |
Total Other Intangible Assets |  | $ | 58,047 |  |  | $ | 25,400 |  |  | $ | 32,647 |
Finite-lived Intangible Assets Amortization Expense [Table Text Block] |
|  | Three Months Ended |  |  | Six Months Ended |
|  | December 31 |  |  | December 31 |
(In thousands) |  | 2019 |  |  | 2018 |  |  | 2019 |  |  | 2018 |
Amortization Expense of Other Intangible Assets |  | $ | 671 |  |  | $ | 689 |  |  | $ | 1,346 |  |  | $ | 1,380 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
(In thousands) |  |  |  |
2020 |  | $ | 2,687 |
2021 |  | $ | 2,682 |
2022 |  | $ | 2,459 |
2023 |  | $ | 2,412 |
2024 |  | $ | 2,412 |
After 2024 |  | $ | 16,573 |

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