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Note 6 - Goodwill (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Jun. 30, 2015
--- | --- | ---
Lighting Segment [Member] |  |
Goodwill | $ 34,913 | $ 34,913
Accumulated impairment losses | (34,778) | (34,778)
Goodwill, net as of June 30, 2016 | 135 | 135
Graphics Segment [Member] |  |
Goodwill | 28,690 | 28,690
Accumulated impairment losses | (27,525) | (27,525)
Goodwill, net as of June 30, 2016 | 1,165 | 1,165
Technology Segment [Member] |  |
Goodwill | 11,621 | 11,621
Accumulated impairment losses | (2,413) | (2,413)
Goodwill, net as of June 30, 2016 | 9,208 | 9,208
All Other Category [Member] |  |
Goodwill |  |
Accumulated impairment losses |  |
Goodwill, net as of June 30, 2016 |  |
Goodwill | 75,224 | 75,224
Accumulated impairment losses | (64,716) | (64,716)
Goodwill, net as of June 30, 2016 | $ 10,508 | $ 10,508

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