v3.25.4
Note 4 - Segment Information - Revenue by Geographic Area (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Revenue $ 33,913 $ 38,418
UNITED STATES    
Revenue 8,784 10,195
Non-US [Member]    
Revenue [1],[2] $ 25,129 $ 28,223
[1] Revenue from the Central Banks is classified as international revenue. Reporting revenue by country for this customer is not practicable.
[2] Revenue from the Central Banks, consisting of a consortium of central banks around the world, is classified as international revenue. Reporting revenue by country for this customer is not practicable.