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Note 7 - Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Sep. 30, 2015
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] |
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
(In thousands) |  | Lighting |  |  | Graphics |  |  | Technology |  |  | All Other |  |  |  |  |
|  | Segment |  |  | Segment |  |  | Segment |  |  | Category |  |  | Total |
Balance as of June 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 34,913 |  |  | $ | 28,690 |  |  | $ | 11,621 |  |  | $ | -- |  |  | $ | 75,224 |
Accumulated impairment losses |  |  | (34,778 | ) |  |  | (27,525 | ) |  |  | (2,413 | ) |  |  | -- |  |  |  | (64,716 | )
Goodwill, net as of June 30, 2015 |  | $ | 135 |  |  | $ | 1,165 |  |  | $ | 9,208 |  |  | $ | -- |  |  | $ | 10,508 |
Balance as of September 30, 2015 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 34,913 |  |  |  | 28,690 |  |  |  | 11,621 |  |  |  | -- |  |  |  | 75,224 |
Accumulated impairment losses |  |  | (34,778 | ) |  |  | (27,525 | ) |  |  | (2,413 | ) |  |  | -- |  |  |  | (64,716 | )
Goodwill, net as of September 30, 2015 |  | $ | 135 |  |  | $ | 1,165 |  |  | $ | 9,208 |  |  | $ | -- |  |  | $ | 10,508 |
Schedule of Intangible Assets and Goodwill [Table Text Block] |
|  | September 30, 2015 |
Other Intangible Assets |  | Gross |  |  |  |  |  |  |  |  |
(In thousands) |  | Carrying |  |  | Accumulated |  |  | Net |
|  | Amount |  |  | Amortization |  |  | Amount |
Amortized Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 9,316 |  |  | $ | 7,363 |  |  | $ | 1,953 |
Patents |  |  | 338 |  |  |  | 128 |  |  |  | 210 |
LED technology firmware, software |  |  | 11,228 |  |  |  | 10,930 |  |  |  | 298 |
Trade name |  |  | 460 |  |  |  | 460 |  |  |  | -- |
Non-compete agreements |  |  | 710 |  |  |  | 627 |  |  |  | 83 |
Total Amortized Intangible Assets |  |  | 22,052 |  |  |  | 19,508 |  |  |  | 2,544 |
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 |  | $ | 25,474 |  |  | $ | 19,508 |  |  | $ | 5,966 |
|  | June 30, 2015 |
Other Intangible Assets |  | Gross |  |  |  |  |  |  |  |  |
|  | Carrying |  |  | Accumulated |  |  | Net |
(In thousands) |  | Amount |  |  | Amortization |  |  | Amount |
Amortized Intangible Assets |  |  |  |  |  |  |  |  |  |  |  |
Customer relationships |  | $ | 9,316 |  |  | $ | 7,290 |  |  | $ | 2,026 |
Patents |  |  | 338 |  |  |  | 120 |  |  |  | 218 |
LED technology firmware, software |  |  | 11,228 |  |  |  | 10,910 |  |  |  | 318 |
Trade name |  |  | 460 |  |  |  | 460 |  |  |  | -- |
Non-compete agreements |  |  | 710 |  |  |  | 602 |  |  |  | 108 |
Total Amortized Intangible Assets |  |  | 22,052 |  |  |  | 19,382 |  |  |  | 2,670 |
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 |  | $ | 25,474 |  |  | $ | 19,382 |  |  | $ | 6,092 |
Finite-lived Intangible Assets Amortization Expense [Table Text Block] |
(In thousands) |  | Amortization Expense of Other Intangible Assets |
|  | September 30, 2015 |  |  | September 30, 2014 |
Three Months Ended |  | $ | 126 |  |  | $ | 148 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
(In thousands) |
2016 |  | $ | 505 |
2017 |  | $ | 409 |
2018 |  | $ | 400 |
2019 |  | $ | 400 |
2020 |  | $ | 327 |
After 2020 |  | $ | 629 |

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