Quarterly report pursuant to Section 13 or 15(d)

Other Financing Lines of Credit - Summary Of Components of Other Financing Lines of Credit (Detail)

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Other Financing Lines of Credit - Summary Of Components of Other Financing Lines of Credit (Detail) - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Line of Credit Facility [Line Items]    
Total Capacity $ 1,598,935  
Outstanding borrowings 1,071,191 $ 928,479
Reverse Lines    
Line of Credit Facility [Line Items]    
Total Capacity 1,530,728  
Outstanding borrowings 1,014,038 870,136
Reverse Lines | June 2024 - October 2026, First Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity 932,500  
Outstanding borrowings 433,829 432,918
Reverse Lines | Various Maturities, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 498,228  
Outstanding borrowings 482,228 344,367
Reverse Lines | October 2027, MSR    
Line of Credit Facility [Line Items]    
Total Capacity 70,000  
Outstanding borrowings 69,231 69,231
Reverse Lines | October 2024, Unsecuritized Tails    
Line of Credit Facility [Line Items]    
Total Capacity 30,000  
Outstanding borrowings 28,750 23,620
Mortgage Lines    
Line of Credit Facility [Line Items]    
Total Capacity 48,207  
Outstanding borrowings 37,153 38,343
Mortgage Lines | Various Maturities, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 35,707  
Outstanding borrowings 35,707 36,208
Mortgage Lines | October 2024, First Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity 12,500  
Outstanding borrowings 1,446 2,135
Commercial Lines | July 2024, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 20,000  
Outstanding borrowings $ 20,000 $ 20,000