v3.26.3
Note 4 - Investments in Debt Securities - Amortized Cost and Fair Value of Investments in Debt Securities (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Dec. 31, 2025
Investment in debt securities, amortized cost $ 9,343   $ 12,316
Investment in debt securities, fair value 9,386 $ 12,616 12,523
Investment in debt securities – balance 12,523 16,330  
Purchases 570 5,506  
Sales at cost (3,610) (9,324)  
Realized gain from sale of investment in debt securities 84 93  
Interest and dividend income 410 532  
Unrealized gain (144) 94  
Professional management fees and other fees (29) (34)  
Withdrawals from debt securities (418) (581)  
Investment in debt securities – balance 9,386 12,616  
Less – current portion (5,457) (5,563) (4,917)
Investments in debt securities- long term 3,929 $ 7,053 7,606
US Treasury and Government [Member]      
Investment in debt securities, amortized cost 6,627   9,254
Investment in debt securities, fair value 6,648   9,402
Investment in debt securities – balance 9,402    
Investment in debt securities – balance 6,648    
Corporate Debt Securities [Member]      
Investment in debt securities, amortized cost 2,716   3,062
Investment in debt securities, fair value 2,738   $ 3,121
Investment in debt securities – balance 3,121    
Investment in debt securities – balance $ 2,738