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Note 7 - Goodwill and Other Intangible Assets - Goodwill (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jun. 30, 2020
--- | --- | ---
Goodwill | $ 99,661 | $ 115,401
Accumulated impairment losses | (89,288) | (105,028)
Goodwill, net | 10,373 | 10,373
Lighting Segment [Member] |  |
Goodwill | 70,971 | 86,711
Accumulated impairment losses | (61,763) | (77,503)
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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