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Note 6 - Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands | Jun. 30, 2020 | Jun. 30, 2019
--- | --- | ---
Goodwill | $ 115,401 | $ 123,254
Accumulated impairment losses | (105,028) | (112,881)
Goodwill, net | 10,373 | 10,373
Lighting Segment [Member] |  |
Goodwill | 86,711 | 94,564
Accumulated impairment losses | (77,503) | (85,356)
Goodwill, net | 9,208 | 9,208
Graphics Segment [Member] |  |
Goodwill | 28,690 | 28,690
Accumulated impairment losses | (27,525) | (27,525)
Goodwill, net | $ 1,165 | $ 1,165

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