Organization and Basis of Presentation - Schedule of Components of Marketable Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Equity securities:
Equity securities, carrying value	$ 92,165	$ 98,070
Total - Marketable securities
Available for sale debt securities:
Marketable securities, amortized cost	69,176	76,111
Marketable securities, unrealized gain (loss)	22,989	21,959
Marketable securities, carrying value	92,165	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	38,426	48,738
Equity securities, unrealized gain (loss)	23,091	21,736
Equity securities, carrying value	61,517	70,474
U.S. Treasury and agency securities
Available for sale debt securities:
Debt securities, amortized cost	12,321	10,186
Debt securities, unrealized gain (loss)	(61)	103
Debt securities, carrying value	12,260	10,289
Certificates of deposit
Available for sale debt securities:
Debt securities, amortized cost	6,169	5,000
Debt securities, unrealized gain (loss)	0	0
Debt securities, carrying value	6,169	5,000
Corporate debt securities
Available for sale debt securities:
Debt securities, amortized cost	11,795	8,954
Debt securities, unrealized gain (loss)	(44)	105
Debt securities, carrying value	11,751	9,059
Municipal debt securities
Available for sale debt securities:
Debt securities, amortized cost	465	556
Debt securities, unrealized gain (loss)	3	9
Debt securities, carrying value	$ 468	$ 565