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Note 9 - Stockholders' Equity (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
  Foreign Currency Translation Adjustments  Unrealized Losses on Available-For-Sale Investments  

Total

 

Balance, December 31, 2023

 $(1,057) $(12) $(1,069)

Other comprehensive loss

  (114)  (38)  (152)

Balance, March 31, 2024

 $(1,171) $(50) $(1,221)