Fair Value Measurements and Marketable Securities Available for Sale - Schedule of Net Realized Gain (Loss) on Marketable Securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net realized gains (losses) on available-for-sale securities were as follows:
Realized gains from sales of available-for-sale securities	$ 2	$ 1	$ 9	$ 46
Realized losses from sales of available-for-sale securities	(695)	0	(745)
Debt Securities, Available-for-sale, Unrealized Gain (Loss), Total	(693)	1	(736)	46
Net recognized gains (losses) on equity securities were as follows:
Net realized losses on equities sold	0	0	(337)
Net realized gains on equities sold	1	0	165
Equity Securities, FV-NI, Gain (Loss), Total	(1)	0	(172)
Marketable Securities, Gain (Loss), Total	$ (694)	$ 1	$ (908)	$ 46