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Note 12 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Income from operations | $ 6,927 | $ 17,669 | $ 27,292 | $ 48,845
Operating Segments [Member] |  |  |  |
Income from operations | 6,927 | 17,669 | 27,292 | 48,845
Operating Segments [Member] | United States Segment [Member] |  |  |  |
Income from operations | 23,475 | 25,164 | 72,258 | 74,602
Operating Segments [Member] | Europe Segment [Member] |  |  |  |
Income from operations | (2,223) | 3,764 | 1,469 | 10,389
Operating Segments [Member] | Japan Segment [Member] |  |  |  |
Income from operations | $ (14,325) | $ (11,259) | $ (46,435) | $ (36,146)

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