XML 29 R18.htm IDEA: XBRL DOCUMENT v3.25.3
Note 2 - Fair Value of Financial Instruments (Tables)
 9 Months Ended
Sep. 30, 2025
Notes Tables  
Fair Value, by Balance Sheet Grouping [Table Text Block]
           

September 30, 2025

    

December 31, 2024

  

Financial Assets:

  

Level

    

Carrying

Value

    

Fair Value

    

Carrying

Value

    

Fair Value

  
                                         

Cash and cash equivalents

     2     $ 7,851,889     $ 7,851,889     $ 3,421,576     $ 3,421,576  

Certificates of deposit

     2       2,166,088       2,166,088       5,908,491       5,829,337  

Total

           $ 10,017,977     $ 10,017,977     $ 9,330,067     $ 9,250,913