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Note 9 - Stockholders' Equity (Tables) | 9 Months Ended
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Sep. 30, 2025
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Foreign Currency Translation Adjustments |  |  | Unrealized Gains (Losses) on Available-For-Sale Investments |  |  | Total |
Balance, December 31, 2024 |  | $ | (1,275 | ) |  | $ | (26 | ) |  | $ | (1,301 | )
Other comprehensive income |  |  | 148 |  |  |  | 9 |  |  |  | 157 |
Balance, March 31, 2025 |  |  | (1,127 | ) |  |  | (17 | ) |  |  | (1,144 | )
Other comprehensive income (loss) |  |  | 229 |  |  |  | (1 | ) |  |  | 228 |
Balance, June 30, 2025 |  |  | (898 | ) |  |  | (18 | ) |  |  | (916 | )
Other comprehensive income (loss) |  |  | (19 | ) |  |  | 10 |  |  |  | (9 | )
Balance, September 30, 2025 |  | $ | (917 | ) |  | $ | (8 | ) |  | $ | (925 | )

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