Quarterly report [Sections 13 or 15(d)]

Financing - Narrative (Details)

v3.25.3
Financing - Narrative (Details)
$ in Thousands
9 Months Ended 12 Months Ended
May 13, 2025
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Dec. 31, 2023
USD ($)
Debt Instrument [Line Items]              
Percent of equity of the amount at risk under repurchase agreements   10.00%   10.00%      
Revolving credit facilities   $ 945,371   $ 1,020,171      
Mortgage servicing rights, at fair value   2,626,706 $ 2,884,304 2,994,271 $ 3,015,643 $ 3,065,415 $ 3,052,016
Servicing advances   81,000   141,600      
Warehouse lines of credit   8,452   2,032      
Mortgage loans held-for-sale, at fair value   12,635   2,334      
Senior notes   110,866   0      
Repurchase of convertible senior notes   0 9,675        
Convertible senior notes   261,370   260,229      
Asset Pledged as Collateral              
Debt Instrument [Line Items]              
Mortgage servicing rights, at fair value   $ 2,600,000   $ 3,000,000      
Revolving credit facilities              
Debt Instrument [Line Items]              
Weighted average borrowing rate   7.23%   7.56%      
Weighted average remaining maturity   1 year 4 months 24 days   1 year 7 months 6 days      
Revolving credit facilities | Asset Pledged as Collateral              
Debt Instrument [Line Items]              
Mortgage servicing rights, at fair value   $ 1,600,000   $ 1,600,000      
Servicing advances   $ 82,800   $ 118,700      
Warehouse lines of credit              
Debt Instrument [Line Items]              
Weighted average remaining maturities   90 days          
Weighted average remaining maturities   60 days          
Weighted average borrowing rate   6.38%   6.64%      
Weighted average remaining maturities   82 days   87 days      
Cash held in restricted accounts as collateral   $ 400   $ 400      
Warehouse lines of credit | Asset Pledged as Collateral              
Debt Instrument [Line Items]              
Mortgage loans held-for-sale, at fair value   8,700   2,100      
Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount $ 115,000            
Secured financing interest rate per annum 9.375%            
Redemption price 100.00%            
Net proceeds $ 110,600            
Senior notes   110,900          
Senior Notes Overallotment Option              
Debt Instrument [Line Items]              
Aggregate principal amount $ 15,000            
Convertible Senior Notes              
Debt Instrument [Line Items]              
Aggregate principal amount   $ 261,900   $ 261,900      
Secured financing interest rate per annum   6.25%          
Convertible senior notes conversion ratio   0.0338752   0.0338752      
Principal amount repurchased     10,000        
Repurchase of convertible senior notes     9,700        
Gain on repurchase of convertible notes     $ 200