Interest and Other Investment Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest and Other Income [Abstract]
Interest on cash and cash equivalents and restricted cash	$ 12,643	$ 2,286	$ 30,910	$ 2,660
Interest on loans receivable	291	1,396	1,053	3,215
Amortization of discount on investments in U.S. Treasury bills	0	1,546	3,829	3,403
Other, net	0	0	0	4
Interest and other investment income, net	$ 12,934	$ 5,228	$ 35,792	$ 9,282