v3.26.1
Note 6 - Written Covered Bitcoin Call Options (Details Textual)
$ in Thousands
Jun. 30, 2026
USD ($)
Dec. 31, 2025
USD ($)
Crypto Asset, Number of Units 69.78 0
Call Option [Member]    
Derivative Liability, Current $ 8 $ 0
Bitcoin of Written Premiums [Member]    
Crypto Asset, Number of Units 1.29086595