v3.26.1
Residential Whole Loans - Additional Credit Related Information (Details) - Residential whole loans - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Financing Receivable, Credit Quality Indicator [Line Items]      
Gross write-offs $ 27 $ 616  
Non-QM loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 5,531,388   $ 5,346,693
Gross write-offs 0 0  
Business purpose loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 2,261,932   2,443,328
Legacy RPL/NPL loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
Total 949,434   979,016
Gross write-offs 27 $ 180  
Carrying Value      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 1,053,323    
Total 1,053,323    
Gross write-offs, 2026 - 2022 0    
Gross write-offs, prior 27    
Gross write-offs 27    
Carrying Value | Debt-to-Value Ratio, Less Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 1,004,095    
Total 1,004,095    
Carrying Value | Debt-to-Value Ratio, Greater Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 49,228    
Total 49,228    
Carrying Value | Non-QM loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 559,568    
Total 559,568   593,213
Gross write-offs, 2026 - 2022 0    
Gross write-offs, prior 0    
Gross write-offs 0    
Carrying Value | Non-QM loans | Debt-to-Value Ratio, Less Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 554,905    
Total 554,905    
Carrying Value | Non-QM loans | Debt-to-Value Ratio, Greater Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 4,663    
Total 4,663    
Carrying Value | Business purpose loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 88,597    
Total 88,597   95,163
Gross write-offs, 2026 - 2022 0    
Gross write-offs, prior 0    
Gross write-offs 0    
Carrying Value | Business purpose loans | Debt-to-Value Ratio, Less Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 86,449    
Total 86,449    
Carrying Value | Business purpose loans | Debt-to-Value Ratio, Greater Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 2,148    
Total 2,148    
Carrying Value | Legacy RPL/NPL loans      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 405,158    
Total 405,158   $ 414,676
Gross write-offs, 2026 - 2022 0    
Gross write-offs, prior 27    
Gross write-offs 27    
Carrying Value | Legacy RPL/NPL loans | Debt-to-Value Ratio, Less Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 362,741    
Total 362,741    
Carrying Value | Legacy RPL/NPL loans | Debt-to-Value Ratio, Greater Than 80 Percent      
Financing Receivable, Credit Quality Indicator [Line Items]      
2026 - 2022 0    
Prior 42,417    
Total $ 42,417