Quarterly report pursuant to Section 13 or 15(d)

Fair Value - Summary of Mortgage Servicing Rights (Detail)

v3.22.2
Fair Value - Summary of Mortgage Servicing Rights (Detail)
 6 Months Ended 12 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Discount rate 3.32% 3.03%
Mortgage Servicing Rights [Member] | Minimum [Member] | Weighted Average Prepayment Speed [Member]    
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Weighted average prepayment speed (CPR) 0.10% 0.00%
Mortgage Servicing Rights [Member] | Minimum [Member] | Weighted average delinquency rate [Member]    
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Weighted average delinquency rate 0.80% 0.80%
Mortgage Servicing Rights [Member] | Maximum [Member] | Weighted Average Prepayment Speed [Member]    
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Weighted average prepayment speed (CPR) 12.30% 12.80%
Mortgage Servicing Rights [Member] | Maximum [Member] | Weighted average delinquency rate [Member]    
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Weighted average delinquency rate 4.60% 14.30%
Mortgage Servicing Rights [Member] | Weighted Average [Member] | Weighted Average Prepayment Speed [Member]    
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Weighted average prepayment speed (CPR) 6.80% 8.30%
Mortgage Servicing Rights [Member] | Weighted Average [Member] | Discount rate [Member]    
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Discount rate 9.60% 8.50%
Mortgage Servicing Rights [Member] | Weighted Average [Member] | Weighted average delinquency rate [Member]    
Servicing Assets And Servicing Liabilities At Fair Value Assumptions Used To Estimate Fair Value [Line Items]    
Weighted average delinquency rate 1.40% 1.30%