Equity Method Investments and Other - Schedule of Carrying Value of Equity Method Investments (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 62,725	$ 77,365
Equity method investments
Schedule of Equity Method Investments [Line Items]
Carrying Value	46,572	53,498
Arena Special Opportunities Fund, LP units
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 22,399	$ 26,936
Ownership %	13.10%	14.00%
JVM Funds LLC
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 12,856	$ 14,911
Ownership %	10.10%	10.10%
Hudson Ventures Fund II LP units
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 5,397	$ 5,503
Ownership %	2.50%	2.50%
RISCOM
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 2,952	$ 3,307
Ownership %	20.00%	20.00%
Brewer Lane Ventures Fund II LP units
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 2,662	$ 2,251
Ownership %	2.40%	2.40%
Dowling Capital Partners LP units
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 306	$ 590
Ownership %	5.10%	5.00%
Arena SOP LP units
Schedule of Equity Method Investments [Line Items]
Carrying Value	$ 0	$ 0
Ownership %	11.40%	11.20%