v3.26.3
Residential Whole Loans - Additional Credit Related Information (Details) - Residential whole loans - USD ($)
$ in Thousands
 9 Months Ended
Sep. 30, 2026
Dec. 31, 2025
Non-QM loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total $ 5,761,774 $ 5,346,693
Business purpose loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 1,999,999 2,443,328
Seasoned RPL/NPL loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
Total 885,318 979,016
Carrying Value    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 965,563  
Total 965,563  
Gross write-offs, 2026 - 2022 0  
Gross write-offs, prior 1,493  
Gross write-offs 1,493  
Carrying Value | Debt-to-Value Ratio, Less Than 80 Percent    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 926,803  
Total 926,803  
Carrying Value | Debt-to-Value Ratio, Greater Than 80 Percent    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 38,760  
Total 38,760  
Carrying Value | Non-QM loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 502,529  
Total 502,529 593,213
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 500,509  
Total 500,509  
Carrying Value | Non-QM loans | Debt-to-Value Ratio, Greater Than 80 Percent    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 2,020  
Total 2,020  
Carrying Value | Business purpose loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 78,071  
Total 78,071 95,163
Gross write-offs, 2026 - 2022 0  
Gross write-offs, prior 1,458  
Gross write-offs 1,458  
Carrying Value | Business purpose loans | Debt-to-Value Ratio, Less Than 80 Percent    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 77,303  
Total 77,303  
Carrying Value | Business purpose loans | Debt-to-Value Ratio, Greater Than 80 Percent    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 768  
Total 768  
Carrying Value | Seasoned RPL/NPL loans    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 384,963  
Total 384,963 $ 414,676
Gross write-offs, 2026 - 2022 0  
Gross write-offs, prior 35  
Gross write-offs 35  
Carrying Value | Seasoned RPL/NPL loans | Debt-to-Value Ratio, Less Than 80 Percent    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 348,991  
Total 348,991  
Carrying Value | Seasoned RPL/NPL loans | Debt-to-Value Ratio, Greater Than 80 Percent    
Financing Receivable, Credit Quality Indicator [Line Items]    
2026 - 2022 0  
Prior 35,972  
Total $ 35,972