Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement [Abstract]
Net income (loss)	$ 518,621	$ (168,911)
Other comprehensive income (loss):
Unrealized loss on investments	(3,696)	(40)
Amortization of actuarial (loss) gain	(10)	14
Other comprehensive loss	(3,706)	(26)
Comprehensive income (loss)	$ 514,915	$ (168,937)