XML 67 R59.htm IDEA: XBRL DOCUMENT v3.22.1
Investments - Realized and Unrealized Gains and Losses related to Marketable Equity Securities (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]    
Realized (loss) gain on equity securities sold $ (25) $ 24
Unrealized (loss) gain on equity securities held (3,362) 901
Total (loss) gain recognized, net $ (3,387) $ 925