Quarterly report pursuant to Section 13 or 15(d)

Mortgage Servicing Rights, at Fair Value - Summary of Information Regarding Loan Servicing Portfolio Delinquencies Percentages and Unpaid Balances (Detail)

v3.22.2.2
Mortgage Servicing Rights, at Fair Value - Summary of Information Regarding Loan Servicing Portfolio Delinquencies Percentages and Unpaid Balances (Detail)
Sep. 30, 2022
Dec. 31, 2021
Servicing Assets at Fair Value [Line Items]    
Number of Loans 1.90% 0.60%
Unpaid Principal Balance 1.60% 0.40%
Foreclosure/real estate owned    
Servicing Assets at Fair Value [Line Items]    
Number of Loans 0.10% 0.00%
Unpaid Principal Balance 0.10% 0.00%
30 days    
Servicing Assets at Fair Value [Line Items]    
Number of Loans 1.10% 0.40%
Unpaid Principal Balance 0.90% 0.30%
60 days    
Servicing Assets at Fair Value [Line Items]    
Number of Loans 0.20% 0.10%
Unpaid Principal Balance 0.20% 0.00%
90 or more days    
Servicing Assets at Fair Value [Line Items]    
Number of Loans 0.60% 0.10%
Unpaid Principal Balance 0.50% 0.10%