v3.25.4
Summary of Significant Accounting Policies (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2025
security_loan
Dec. 31, 2025
USD ($)
real_estate_owned_asset
Dec. 31, 2025
USD ($)
real_estate_owned_asset
portfolio
Dec. 31, 2025
USD ($)
real_estate_owned_asset
loan
Dec. 31, 2025
USD ($)
security_loan
real_estate_owned_asset
Dec. 31, 2025
USD ($)
real_estate_owned_asset
Dec. 31, 2024
USD ($)
real_estate_owned_asset
loan
Dec. 31, 2023
USD ($)
Dec. 31, 2017
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Restricted cash   $ 0 $ 0 $ 0 $ 0 $ 0 $ 0    
Number of REO assets classified as held for sale investment | real_estate_owned_asset   12 12 12 12 12 7    
Maximum guarantee   $ 5,500,000 $ 5,500,000 $ 5,500,000 $ 5,500,000 $ 5,500,000 $ 5,500,000    
Guarantee liability   32,000 32,000 32,000 32,000 32,000 32,000    
CECL reserve   284,440,000 284,440,000 $ 284,440,000 $ 284,440,000 284,440,000 $ 733,936,000 $ 576,936,000  
Number of loans 130     131 131   130    
Principal balance   $ 18,069,134,000 $ 18,069,134,000 $ 18,069,134,000 $ 18,069,134,000 $ 18,069,134,000 $ 19,047,518,000 $ 23,787,012,000  
Number of real estate owned assets | real_estate_owned_asset           5      
Net Lease Joint Venture                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Ownership percentage   75.00% 75.00% 75.00% 75.00% 75.00% 75.00%    
Bank Loan Portfolio Joint Venture                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Ownership percentage   35.00% 35.00% 35.00% 35.00% 35.00%      
Number Of Loan Portfolio Acquired | portfolio     2            
Level 3 | Minimum | Capitalization rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Measurement input   0.0650 0.0650 0.0650 0.0650 0.0650      
Level 3 | Minimum | Discount rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Measurement input   0.0925 0.0925 0.0925 0.0925 0.0925      
Level 3 | Maximum | Capitalization rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Measurement input   0.0800 0.0800 0.0800 0.0800 0.0800      
Level 3 | Maximum | Discount rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Measurement input   0.1500 0.1500 0.1500 0.1500 0.1500      
Level 3 | Fair Value, Nonrecurring                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
CECL reserve   $ 87,300,000 $ 87,300,000 $ 87,300,000 $ 87,300,000 $ 87,300,000      
Number of loans | loan       6          
Principal balance   $ 174,600,000 $ 174,600,000 $ 174,600,000 $ 174,600,000 $ 174,600,000      
Level 3 | Fair Value, Nonrecurring | Minimum | Capitalization rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Real estate owned, measurement input   0.0600 0.0600 0.0600 0.0600 0.0600      
Level 3 | Fair Value, Nonrecurring | Minimum | Discount rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Real estate owned, measurement input   0.0700 0.0700 0.0700 0.0700 0.0700      
Level 3 | Fair Value, Nonrecurring | Maximum | Capitalization rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Real estate owned, measurement input   0.0855 0.0855 0.0855 0.0855 0.0855      
Level 3 | Fair Value, Nonrecurring | Maximum | Discount rate                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Real estate owned, measurement input   0.1055 0.1055 0.1055 0.1055 0.1055      
Building                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Estimated useful lives (in years)   40 years              
Land Improvements                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Estimated useful lives (in years)   15 years              
Leasehold Improvements                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Estimated useful lives (in years)   10 years              
Multifamily Joint Venture                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Ownership percentage                 85.00%
Multifamily Joint Venture | Walker & Dunlop                  
Accounts, Notes, Loans and Financing Receivable [Line Items]                  
Minority participation in senior term facility                 15.00%