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Marketable Equity Securities (Details 2) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Marketable Equity Securities        
Gross proceeds from the sale of marketable equity securities sold $ (124) $ 0 $ (1,631) $ (54)
Cost of marketable equity securities sold 64 0 220 0
Realized gain on marketable equity securities sold 60 0 1,411 54
Net gain on marketable equity securities 80 110 666 420
Change in marketable equity securities at fair value $ (44) $ 110 $ (965) $ 366