Investments, Unrealized Gains (Losses) on Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Investments [Abstract]
Net realized and unrealized gains (losses) recognized during the period on equity securities	$ 494	$ (4,866)	$ (1,881)	$ (2,673)
Less: Net realized gains recognized during the period on equity securities sold during the period	0	0	0	0
Unrealized gains (losses) recognized during the reporting period on equity securities, net	$ 494	$ (4,866)	$ (1,881)	$ (2,673)