XML 74 R55.htm IDEA: XBRL DOCUMENT v3.20.4
Cash, Cash Equivalents and Short-Term Investments - Equity Investments (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Cash, Cash Equivalents and Short-Term Investments    
Net losses recognized during the year on equity securities $ (245) $ (102)
Less: net losses recognized during the year on equity securities sold during the year (1,090) 0
Unrealized gains (losses) recognized during the year on equity securities still held at December 31, 2020 and 2019 $ 845 $ (102)