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

v3.23.2
Other Financing Lines of Credit - Summary Of Components of Other Financing Lines of Credit (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]    
Total Capacity $ 2,534,132  
Outstanding borrowings 1,327,634 $ 1,530,637
Mortgage Lines    
Line of Credit Facility [Line Items]    
Total Capacity 414,877  
Outstanding borrowings 139,225 179,733
Mortgage Lines | October 2023, First Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity 311,673  
Outstanding borrowings 83,814 0
Mortgage Lines | November 2023, Home Improvement Consumer Loans    
Line of Credit Facility [Line Items]    
Total Capacity 50,000  
Outstanding borrowings 7,495 5,107
Mortgage Lines | March 2026, MSR    
Line of Credit Facility [Line Items]    
Total Capacity 15,600  
Outstanding borrowings 10,312 138,524
Mortgage Lines | No Maturity Date, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 37,604  
Outstanding borrowings 37,604 36,102
Reverse Lines    
Line of Credit Facility [Line Items]    
Total Capacity 1,815,715  
Outstanding borrowings 983,410 1,129,402
Reverse Lines | April 2023 - November 2023, First Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity 1,375,000  
Outstanding borrowings 584,658 714,013
Reverse Lines | No Maturity Date, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity 320,715  
Outstanding borrowings 320,715 297,893
Reverse Lines | October 2027, MSR    
Line of Credit Facility [Line Items]    
Total Capacity 70,000  
Outstanding borrowings 33,036 78,952
Reverse Lines | May 2023, Unsecurized Tails    
Line of Credit Facility [Line Items]    
Total Capacity 50,000  
Outstanding borrowings $ 45,001 38,544
Reverse Lines | May 2023, Unsecurized Tails | Prime Rate    
Line of Credit Facility [Line Items]    
Basis spread on variable rate 0.50%  
Reverse Lines | May 2023, Unsecurized Tails | Prime Rate, Floor    
Line of Credit Facility [Line Items]    
Basis spread on variable rate 6.00%  
Commercial Lines    
Line of Credit Facility [Line Items]    
Total Capacity $ 303,540  
Outstanding borrowings 204,999 221,502
Commercial Lines | April 2023 - November 2023, First Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity 191,040  
Outstanding borrowings 159,938 167,159
Commercial Lines | August 2023, Encumbered Agricultural Loans    
Line of Credit Facility [Line Items]    
Total Capacity 75,000  
Outstanding borrowings $ 7,561 $ 25,127
Commercial Lines | August 2023, Encumbered Agricultural Loans | Minimum    
Line of Credit Facility [Line Items]    
Interest Rate 2.50% 2.50%
Commercial Lines | August 2023, Encumbered Agricultural Loans | Maximum    
Line of Credit Facility [Line Items]    
Interest Rate 3.25% 3.25%
Commercial Lines | February 2023, Second Lien Mortgages    
Line of Credit Facility [Line Items]    
Total Capacity $ 25,000  
Outstanding borrowings $ 25,000 $ 24,175
Interest Rate 15.00% 15.00%
Commercial Lines | January 2024, Mortgage Related Assets    
Line of Credit Facility [Line Items]    
Total Capacity $ 12,500  
Outstanding borrowings $ 12,500 $ 5,041