v3.25.2
Borrowings - Broker-Dealer Credit Facilities Carrying Values, Net (Details) - USD ($)
Jun. 30, 2025
Dec. 31, 2024
Line of Credit Facility [Line Items]    
Total principal of long-term borrowings $ 1,769,300,000 $ 1,767,265,000
Deferred Debt Issuance Cost (23,473,000) (23,922,000)
Outstanding Borrowings, net 1,743,171,000 1,740,467,000
Broker-dealer credit facilities    
Line of Credit Facility [Line Items]    
Financing Available 1,060,000,000 1,060,000,000
Total principal of long-term borrowings 185,000,000 10,000,000
Deferred Debt Issuance Cost (3,546,000) 0
Outstanding Borrowings, net $ 181,454,000 $ 10,000,000
Uncommitted facility    
Line of Credit Facility [Line Items]    
Interest Rate 5.50% 5.50%
Financing Available $ 400,000,000 $ 400,000,000
Total principal of long-term borrowings 100,000,000 0
Deferred Debt Issuance Cost 0 0
Outstanding Borrowings, net $ 100,000,000 0
Uncommitted facility | Receivables from broker-dealers and clearing organizations    
Line of Credit Facility [Line Items]    
Deferred Debt Issuance Cost   (300,000)
Committed facility    
Line of Credit Facility [Line Items]    
Interest Rate 5.75%  
Financing Available $ 650,000,000 650,000,000
Total principal of long-term borrowings 75,000,000 0
Deferred Debt Issuance Cost (3,546,000) 0
Outstanding Borrowings, net $ 71,454,000 $ 0
Committed facility | Borrowing Base A Loan    
Line of Credit Facility [Line Items]    
Interest Rate 5.75% 5.75%
Committed facility | Borrowing Base B Loan    
Line of Credit Facility [Line Items]    
Interest Rate 7.00% 7.00%
Outstanding Borrowings, net $ 0 $ 0
Overdraft facility    
Line of Credit Facility [Line Items]    
Interest Rate 7.95% 7.99%
Financing Available $ 10,000,000 $ 10,000,000
Total principal of long-term borrowings 10,000,000 10,000,000
Deferred Debt Issuance Cost 0 0
Outstanding Borrowings, net $ 10,000,000 $ 10,000,000