XML 61 R51.htm IDEA: XBRL DOCUMENT v3.23.3
Cash, Cash Equivalents and Short-Term Investments - Equity investments (Details) - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Cash, Cash Equivalents and Short-Term Investments    
Investments in equity securities $ 97,500  
Net losses recognized during the nine months on equity securities (3,765) $ (12,436)
Less: net gains (losses) recognized during the year on equity securities sold during the period 1,510  
Unrealized losses recognized during the nine months on equity securities still held at September 30, 2023 and 2022 $ (2,255) $ (12,436)