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Note 3 - Goodwill | 3 Months Ended
--- | ---
Mar. 31, 2023
Notes to Financial Statements |
Goodwill Disclosure [Text Block] | 3. Goodwill The changes in the carrying amounts of goodwill were as follows:
|  | Goodwill |
|  | (in thousands) |
Balance as of December 31, 2022 |  | $ | 18,904 |
Effect of foreign currency translation |  |  | (33 | )
Balance as of March 31, 2023 |  | $ | 18,871 |

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