Investments - Gains (Losses) on Equity Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Net (losses) gains during the period	$ (53,888)	$ 298,490
Less: losses on securities sold during the period	(46,743)	0
Unrealized (losses) gains recognized during the period on short-term investments held at the reporting date	$ (7,145)	$ 298,490	$ 0