CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS [Abstract]
Net loss	$ (147,410)	$ (46,992)	$ (357,023)	$ (217,292)
Unrealized gains (losses) on debt securities, net of tax	5,029	(8,734)	11,421	(29,508)
Currency translation adjustment	(153)	(399)	22	(964)
Comprehensive loss	$ (142,534)	$ (56,125)	$ (345,580)	$ (247,764)