Quarterly report pursuant to Section 13 or 15(d)

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

v3.22.1
Other Financing Lines of Credit - Summary Of Components of Other Financing Lines of Credit (Detail) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]    
Total Capacity $ 5,870,329  
Outstanding borrowings 3,189,756 $ 3,347,442
Mortgage Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Total Capacity 3,470,329  
Outstanding borrowings 1,593,908 1,996,538
Reverse Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Total Capacity 1,812,500  
Outstanding borrowings 1,302,891 1,129,402
Commercial Lines Of Credit [Member]    
Line of Credit Facility [Line Items]    
Total Capacity 587,500  
Outstanding borrowings $ 292,957 221,502
April 2022 - June 2023 | Mortgage Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date April 2022 - June 2023  
Interest rate LIBOR/SOFR + applicable margin  
Collateral pledge First Lien Mortgages  
Total Capacity $ 3,225,000  
Outstanding borrowings $ 1,431,784 1,802,348
May 2022 - November 2022 | Mortgage Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date May 2022 - November 2022  
Interest rate LIBOR/ AMERIBOR + applicable margin  
Collateral pledge MSRs  
Total Capacity $ 95,329  
Outstanding borrowings $ 110,885 138,524
Mortgage Related Assets | Commercial Lines Of Credit [Member]    
Line of Credit Facility [Line Items]    
Interest rate LIBOR + applicable margin  
Collateral pledge Mortgage Related Assets  
Outstanding borrowings   5,041
March 2026 | Mortgage Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date March 2026  
Interest rate LIBOR + applicable margin  
Collateral pledge Mortgage Related Assets  
Total Capacity $ 150,000  
Outstanding borrowings $ 51,269 55,666
April 2022 - April 2023 | Reverse Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date April 2022 - April 2023  
Interest rate LIBOR + applicable margin  
Collateral pledge First Lien Mortgages  
Total Capacity $ 1,275,000  
Outstanding borrowings $ 887,435 714,013
April 2022 - September 2023 | Reverse Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date April 2022 - September 2023  
Interest rate Bond accrual rate + applicable margin  
Collateral pledge Mortgage Related Assets  
Total Capacity $ 397,500  
Outstanding borrowings $ 300,834 297,893
February 2024 | Reverse Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date February 2024  
Interest rate LIBOR + applicable margin  
Collateral pledge MSRs  
Total Capacity $ 90,000  
Outstanding borrowings $ 70,365 78,952
May 2022 | Reverse Line Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date May 2022  
Interest rate Prime + .50%; 6% floor  
Collateral pledge Unsecuritized Tails  
Total Capacity $ 50,000  
Outstanding borrowings $ 44,257 38,544
June 2022 - August 2022 | Commercial Lines Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date June 2022 - August 2022  
Interest rate LIBOR/SOFR + applicable margin  
Collateral pledge Encumbered Agricultural Loans  
Total Capacity $ 125,000  
Outstanding borrowings $ 25,036 25,127
April 2022 - January 2024 | Commercial Lines Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date April 2022 - January 2024  
Interest rate LIBOR + applicable margin  
Collateral pledge First Lien Mortgages  
Total Capacity $ 432,500  
Outstanding borrowings $ 237,921 167,159
August 2022 | Commercial Lines Of Credit [Member]    
Line of Credit Facility [Line Items]    
Maturity date August 2022  
Interest rate 10%  
Collateral pledge Second Lien Mortgages  
Total Capacity $ 30,000  
Outstanding borrowings $ 30,000 $ 24,175