Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Net (loss) income	$ (76,493)	$ 61,813	$ 442,128	$ (107,098)
Other comprehensive (loss) income:
Unrealized loss on investments	(2,739)	(44)	(6,435)	(84)
Amortization of actuarial (loss) gain	(9)	14	(19)	28
Other comprehensive loss	(2,748)	(30)	(6,454)	(56)
Comprehensive (loss) income	$ (79,241)	$ 61,783	$ 435,674	$ (107,154)