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Note 18 - Segment Reporting - Income From Operations (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income from operations | $ 40,342 | $ 59,836 | $ 79,856
Operating Segments [Member] | United States Segment [Member] |  |  |
Income from operations | 98,001 | 98,762 | 108,594
Operating Segments [Member] | Europe Segment [Member] |  |  |
Income from operations | 730 | 11,707 | 15,077
Operating Segments [Member] | Corporate Unallocated and Japan Segment[Member] |  |  |
Income from operations | $ (58,389) | $ (50,633) | $ (43,815)

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