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
Jun. 30, 2024
Dec. 31, 2023
Line of Credit Facility [Line Items]    
Total Capacity $ 1,557,764  
Outstanding borrowings 1,073,844 $ 928,479
Reverse Lines    
Line of Credit Facility [Line Items]    
Total Capacity 1,520,670  
Outstanding borrowings 1,038,072 870,136
Reverse Lines | June 2024 - October 2026, First Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity 1,018,000  
Outstanding borrowings 567,539 432,918
Reverse Lines | Various Maturities, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 392,670  
Outstanding borrowings 375,524 344,367
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 40,000  
Outstanding borrowings 25,778 23,620
Mortgage Lines    
Line of Credit Facility [Line Items]    
Total Capacity 37,094  
Outstanding borrowings 35,772 38,343
Mortgage Lines | Various Maturities, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 35,094  
Outstanding borrowings 35,094 36,208
Mortgage Lines | October 2024, First Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity 2,000  
Outstanding borrowings 678 2,135
Commercial Lines | July 2024, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 0  
Outstanding borrowings $ 0 $ 20,000