Investments - Schedule of Net Gains and Losses on Equity Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Business Combinations [Abstract]
Net gains and (losses) recognized during the period on equity securities	$ (1,832)	$ 10,376	$ (7,443)
Less: Net gains realized during the period on equity securities	(2,981)	(10,324)	0
Unrealized net gains and losses recognized during the period on equity securities still held at the reporting date	$ (4,813)	$ 52	$ (7,443)