v3.26.1
Note 2 - Summary of Significant Accounting Policies - Revenues by Significant Geographic Area (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Revenue from Contract with Customer, Including Assessed Tax $ 28,236 $ 49,336
UNITED STATES    
Revenue from Contract with Customer, Including Assessed Tax 16,837 37,493
SERBIA    
Revenue from Contract with Customer, Including Assessed Tax 6,349 6,951
ROMANIA    
Revenue from Contract with Customer, Including Assessed Tax 1,746 1,970
CYPRUS    
Revenue from Contract with Customer, Including Assessed Tax 0 1,008
CROATIA    
Revenue from Contract with Customer, Including Assessed Tax 1,186 697
MONTENEGRO    
Revenue from Contract with Customer, Including Assessed Tax 1,119 646
BOSNIA AND HERZEGOVINA    
Revenue from Contract with Customer, Including Assessed Tax 762 271
Other [Member]    
Revenue from Contract with Customer, Including Assessed Tax $ 237 $ 300