Summary of Significant Accounting Policies - Marketable Debt and Equity Securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accounting Policies [Abstract]
Impairment loss or recoveries	$ 0	$ 0
Accrued interest	1,300,000	800,000
Unrealized loss on marketable debt securities	5,400,000	1,600,000
Equity securities impairment	100,000	800,000
Net gains recognized on equity securities	$ 23,434,000	$ 39,289,000	$ 105,000