Organization and Basis of Presentation - Schedule of Components of Marketable Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2026	Dec. 31, 2025
Equity securities:
Equity securities, carrying value	$ 102,665	$ 98,070
Total - Marketable securities
Available for sale debt securities:
Marketable securities, amortized cost	81,366	76,111
Marketable securities, unrealized gain (loss)	21,299	21,959
Marketable securities, carrying value	102,665	98,070
Investment funds - debt securities
Equity securities:
Equity securities, amortized cost		2,677
Equity securities, unrealized gain (loss)		6
Equity securities, carrying value		2,683
Common stock, preferred stock, and stock funds
Equity securities:
Equity securities, amortized cost	48,373	48,738
Equity securities, unrealized gain (loss)	22,543	21,736
Equity securities, carrying value	70,916	70,474
U.S. Treasury and agency securities
Available for sale debt securities:
Debt securities, amortized cost	13,788	10,186
Debt securities, unrealized gain (loss)	(740)	103
Debt securities, carrying value	13,048	10,289
Certificates of deposit
Available for sale debt securities:
Debt securities, amortized cost	6,235	5,000
Debt securities, unrealized gain (loss)	0	0
Debt securities, carrying value	6,235	5,000
Corporate debt securities
Available for sale debt securities:
Debt securities, amortized cost	12,504	8,954
Debt securities, unrealized gain (loss)	(491)	105
Debt securities, carrying value	12,013	9,059
Municipal debt securities
Available for sale debt securities:
Debt securities, amortized cost	466	556
Debt securities, unrealized gain (loss)	(13)	9
Debt securities, carrying value	$ 453	$ 565