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Note 18 - Segment Reporting - Long-lived Assets by Geographic Region (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Long-lived assets | $ 257,785 | $ 280,346 | $ 282,666
Operating Segments [Member] | United States Segment [Member] |  |  |
Long-lived assets | 203,816 | 215,701 | 215,721
Operating Segments [Member] | Europe Segment [Member] |  |  |
Long-lived assets | 53,835 | 59,388 | 59,388
Operating Segments [Member] | Japan Segment [Member] |  |  |
Long-lived assets | $ 134 | $ 5,257 | $ 7,557

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