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Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Statement Of Income And Comprehensive Income [Abstract]        
Net loss $ (71,959) $ (199,853) $ (510,505) $ (831,740)
Other comprehensive income (loss), net of tax        
Unrealized gain (loss) on marketable securities, net of tax 23 (1,210) (119) (43)
Foreign currency translation (4,091) 10,318 (11,465) 7,969
Total other comprehensive income (loss), net of tax (4,068) 9,108 (11,584) 7,926
Total comprehensive loss $ (76,027) $ (190,745) $ (522,089) $ (823,814)