v3.25.4
DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Debt Instrument [Line Items]            
Carrying Value $ 466,750   $ 466,750   $ 473,176 $ 289,191
Deferred financing costs 2,840   2,840   1,679 600
Amortization of deferred financing costs $ 300 $ 100 $ 732 $ 712 1,035 330
Debt repurchase exit fee, percentage 0.50%   0.50%      
Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         305,294 264,143
MSR Financing            
Debt Instrument [Line Items]            
Carrying Value         39,781 0
Financed Retained Interests            
Debt Instrument [Line Items]            
Carrying Value         128,101 25,048
Warehouse Facility 1 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 28,286 12,400
Weighted Average Funding Cost 0.00%   0.00%   9.30%  
Collateral Carrying Value $ 0   $ 0   $ 33,214  
Debt instrument, basis spread on variable rate         4.90%  
Warehouse Facility 2 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 61,007 147,629
Weighted Average Funding Cost 6.40%   6.40%   8.40%  
Collateral Carrying Value $ 24,584   $ 24,584   $ 62,756  
Debt instrument, basis spread on variable rate     2.25%   4.00%  
Debt repurchase exit fee, percentage         0.50%  
Warehouse Facility 3            
Debt Instrument [Line Items]            
Debt repurchase exit fee, percentage         0.50%  
Warehouse Facility 3 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 26,227 21,300
Weighted Average Funding Cost 0.00%   0.00%   9.90%  
Collateral Carrying Value $ 0   $ 0   $ 24,827  
Quarterly variable exit fee based on first principal balance repurchased amount 50,000   50,000   50,000  
Quarterly variable exit fee based on principal balance repurchased in excess of amount $ 50,000   $ 50,000   $ 50,000  
Warehouse Facility 3 | Funding Debt | Minimum            
Debt Instrument [Line Items]            
Debt repurchase exit fee, percentage 0.125%   0.125%   0.125%  
Warehouse Facility 3 | Funding Debt | Maximum            
Debt Instrument [Line Items]            
Debt repurchase exit fee, percentage 1.50%   1.50%   1.50%  
Warehouse Facility 4            
Debt Instrument [Line Items]            
Line of credit facility, unused capacity, commitment fee percentage     0.50%   0.50%  
Warehouse Facility 4 | Minimum            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate     2.15%   3.50%  
Warehouse Facility 4 | Maximum            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate     5.50%   7.50%  
Warehouse Facility 4 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 68,426 5,944
Weighted Average Funding Cost 6.70%   6.70%   8.80%  
Collateral Carrying Value $ 60,367   $ 60,367   $ 72,367  
Warehouse Facility 5 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 21,697 22,600
Weighted Average Funding Cost 0.00%   0.00%   10.20%  
Collateral Carrying Value $ 0   $ 0   $ 21,216  
REIT Warehouse            
Debt Instrument [Line Items]            
Debt repurchase exit fee, percentage 0.15%   0.15%      
REIT Warehouse | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 99,182 0
Weighted Average Funding Cost 7.70%   7.70%   9.90%  
Collateral Carrying Value $ 38,510   $ 38,510   $ 99,016  
Warehouse Facility 6            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate     3.50%   3.50%  
Debt repurchase exit fee, percentage 0.50%   0.50%   0.50%  
Warehouse Facility 6 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value           0
Carrying Value         $ (392)  
Weighted Average Funding Cost 0.00%   0.00%      
Collateral Carrying Value $ 0   $ 0   $ 0  
Warehouse Facility 7            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate         3.50%  
Warehouse Facility 7 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 0 0
Weighted Average Funding Cost 0.00%   0.00%   0.00%  
Collateral Carrying Value $ 0   $ 0   $ 0  
Warehouse Facility 8 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 0 54,270
Weighted Average Funding Cost 0.00%   0.00%   0.00%  
Collateral Carrying Value $ 0   $ 0   $ 0  
Warehouse Facility 9 | Funding Debt            
Debt Instrument [Line Items]            
Carrying Value         $ 861 0
Weighted Average Funding Cost 0.00%   0.00%   11.30%  
Collateral Carrying Value $ 0   $ 0   $ 0  
Lender 1 | MSR Financing            
Debt Instrument [Line Items]            
Carrying Value         $ 39,781 0
Weighted Average Funding Cost 16.80%   16.80%   16.90%  
Collateral Carrying Value $ 65,907   $ 65,907   $ 69,542  
Debt instrument, interest rate, stated percentage 16.50%   16.50%   16.50%  
Financed retained interests | Financed Retained Interests            
Debt Instrument [Line Items]            
Carrying Value         $ 128,101 $ 25,048
Weighted Average Funding Cost 6.60%   6.60%   6.60%  
Collateral Carrying Value $ 199,178   $ 199,178   $ 128,982  
Financed retained interests | Financed Retained Interests | Minimum            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate     0.50%   0.50%  
Financed retained interests | Financed Retained Interests | Maximum            
Debt Instrument [Line Items]            
Debt instrument, basis spread on variable rate     0.55%   0.55%