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Funding Debt - Narrative (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Sep. 30, 2024
Jul. 31, 2025
Debt Instrument [Line Items]        
Proceeds from funding debt   $ 99,040,000 $ 0  
Repayments of funding debt   $ 50,150,000 $ 0  
Line of Credit | Warehouse Credit Agreement | Secured Debt        
Debt Instrument [Line Items]        
Line of credit facility, current borrowing capacity       $ 75,000,000
Line of credit facility, maximum borrowing capacity       150,000,000
Debt instrument, restricted drawdowns, minimum value of stablecoin held       $ 50,000,000
Stated interest rate 6.50% 6.50%   6.50%
Debt instrument, interest rate increase, minimum value of stablecoin held $ 50,000,000.0 $ 50,000,000.0    
Proceeds from funding debt 99,000,000.0      
Repayments of funding debt 50,200,000      
Unused, available borrowing capacity 26,100,000 26,100,000    
Credit card receivables $ 67,900,000 $ 67,900,000   $ 67,900,000
Line of Credit | Warehouse Credit Agreement | Secured Debt | Maximum        
Debt Instrument [Line Items]        
Stated interest rate       8.50%