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Note 5 - Income Taxes - Losses Before Income Tax Domestic and Foreign (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Non-U.S. $ (58,476) $ (137,225) $ (44,205)
United States (65,309) (60,436) (69,290)
Loss before income taxes $ (123,785) $ (197,661) $ (113,495)