v3.26.1
Note 9 - Long-term Investments (Tables)
3 Months Ended
Mar. 31, 2026
Notes Tables  
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]

March 31, 2026

    

Balance, beginning of period

 $1,156,000 

Transfer in

  - 

Unrealized loss

  - 

Ending balance

  1,156,000 

Amount of unrealized loss for the period included in income relating to assets held at the end of the reporting period

  - 

December 31, 2025

    

Balance, beginning of period

 $1,200,000 

Transfer in

  - 

Unrealized loss

  (44,000)

Ending balance

  1,156,000 

Amount of unrealized loss for the period included in income relating to assets held at the end of the reporting period

  (44,000)