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Investments - Realized and Unrealized Gains and Losses related to Marketable Equity Securities (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2023
Investments, Debt and Equity Securities [Abstract]        
Unrealized gain on equity securities held $ 4 $ 1,288 $ 127 $ 2,535
Realized gain on equity securities sold 868 1 2,998 14
Total gain recognized, net $ 872 $ 1,289 $ 3,125 $ 2,549