Revenue - Schedule of Total Revenue Disaggregated by Revenue Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue from contracts with customers	$ 37,102	$ 8,150
Total revenue	35,805	7,240
Underwriting services [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue from contracts with customers	32,949	5,606
Carried interest [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue from contracts with customers	1,096
Commissions [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue from contracts with customers	2,490	2,190
Interest income – customers [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue from contracts with customers	72	39
Other revenue [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue from contracts with customers	230	249
Management fees [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue from contracts with customers	265	66
Principal transactions [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue	(1,532)	(910)
Interest income – noncustomer [Member]
Schedule of Total Revenue Disaggregated by Revenue Type [Line Items]
Total revenue	$ 235