v3.26.1
Fair Value of Financial Instruments - Schedule of Valuation Method of Level 3 Financial Instruments Measured on a Recurring Basis (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commercial mortgage loans, held for sale, measured at fair value - Non-Agency [1] $ 423,031 $ 360,718
Fair Value, Measurements, Recurring    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commercial mortgage loans, held for sale, measured at fair value - Non-Agency 175,750 29,500
Fair Value, Measurements, Recurring | Level III    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commercial mortgage loans, held for sale, measured at fair value - Non-Agency 175,750 29,500
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commercial mortgage loans, held for sale, measured at fair value - Non-Agency 175,750 29,500
Loan commitments and forward sale commitments, net 13,398 5,106
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow | Commercial mortgage loans, held for sale, measured at fair value - Agency    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Commercial mortgage loans, held for sale, measured at fair value - Non-Agency $ 247,281 $ 331,218
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow | Weighted Average    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Yield (percentage) 6.76% 6.56%
Discount rate (percentage) 4.95% 4.81%
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow | Weighted Average | Commercial mortgage loans, held for sale, measured at fair value - Agency    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Yield (percentage) 4.95% 4.81%
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow | Minimum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Yield (percentage) 6.35% 6.42%
Discount rate (percentage) 3.80% 4.07%
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow | Minimum | Commercial mortgage loans, held for sale, measured at fair value - Agency    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Yield (percentage) 3.80%  
Discount rate (percentage)   4.07%
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow | Maximum    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Yield (percentage) 7.05% 7.25%
Discount rate (percentage) 6.30% 6.28%
Commercial mortgage loans, held for sale | Fair Value, Measurements, Recurring | Level III | Discounted Cash Flow | Maximum | Commercial mortgage loans, held for sale, measured at fair value - Agency    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Yield (percentage) 6.30%  
Discount rate (percentage)   6.28%
[1] Includes pledged assets of $1.2 billion and $855.2 million as of March 31, 2026 and December 31, 2025, respectively.