Marketable Debt and Equity Securities - Net Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Marketable Securities [Abstract]
Net gain (loss) recorded on equity securities	$ 9,254	$ (11,023)	$ (448)	$ (13,633)
Less: Net gain recorded on sale of equity securities	92	0	1,280	0
Unrealized gain (loss) recorded on equity securities held at the reporting date	$ 9,162	$ (11,023)	$ (1,728)	$ (13,633)