v3.26.1
Note 2 - Basis of Presentation (Details Textual) - New Issue and Advisory [Member] - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Revenue from Contract with Customer, Excluding Assessed Tax $ 54,059,000 $ 44,133,000 $ 99,770,000 $ 64,297,000
Reclassification, Segmentation Basis Change [Member]        
Revenue from Contract with Customer, Excluding Assessed Tax   $ 6,722   $ (6,354)