Interest and Other Investment Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Interest and Other Income [Abstract]
Amortization of discount on investments in U.S. Treasury bills	$ 1,728	$ 0	$ 1,857	$ 0
Interest on loans receivable	994	558	1,819	1,118
Interest on cash and cash equivalents and restricted cash	310	78	374	140
Other, net	4	903	4	1,803
Interest and other investment income, net	$ 3,036	$ 1,539	$ 4,054	$ 3,061