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Note 4 - Goodwill and Long-Lived Assets - Change in Carrying Amount of Goodwill (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Carrying amount   $ 56,324   $ 56,324  
Goodwill impairment $ 0 $ (48,000) $ 0 (47,951) $ 0
Effect of change in currency translation       1,152  
Carrying amount $ 9,525     $ 9,525