Summary of Critical and Significant Accounting Policies - Marketable Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Equity securities:
Gross Unrealized Loss	$ (57,983)	$ 33,104	$ 12,515
Carrying Value	200	800
Available for sale
Total - Marketable securities, amortized cost	121,636	142,398
Total - Marketable securities, gross unrealized gain (loss)	(8,893)	49,431
Total - Marketable securities, carrying value	112,743	191,829
Investment funds - debt securities
Equity securities:
Amortized Cost	43,155	62,192
Gross Unrealized Loss	(6,771)	(502)
Carrying Value	36,384	61,690
Common stock, preferred stock, and stock funds
Equity securities:
Amortized Cost	78,481	79,155
Gross Unrealized Loss	(2,122)	49,592
Carrying Value	$ 76,359	128,747
Investment-grade unsecured debt
Available for sale
Amortized Cost		1,051
Gross Unrealized Loss		341
Carrying Value		$ 1,392