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Condensed Consolidated Statements of Comprehensive Income (Loss) (Parenthetical) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Statement Of Income And Comprehensive Income [Abstract]        
Unrealized (losses) gains on investments, tax $ (3,296) $ 828 $ (8,783) $ (1,179)