Commitments and Contingent Liabilities - Summary of Unfunded Fixed Rate Loan Commitments (Detail) (Parenthetical)	Mar. 31, 2024
Interest rate less than or equal to 4.00% [Member]
Schedule Of Disclosure Of Unfunded Fixed Rate Loan Commitments [Line Items]
Loan receivable unfunded commitements fixed rate of interest percentage	4.00%
Interest rate greater than or equal to 5.00% [Member]
Schedule Of Disclosure Of Unfunded Fixed Rate Loan Commitments [Line Items]
Loan receivable unfunded commitements fixed rate of interest percentage	5.00%
Maximum [Member] | Interest rate between 4.00% and 5.00% [Member]
Schedule Of Disclosure Of Unfunded Fixed Rate Loan Commitments [Line Items]
Loan receivable unfunded commitements fixed rate of interest percentage	5.00%
Minimum [Member] | Interest rate between 4.00% and 5.00% [Member]
Schedule Of Disclosure Of Unfunded Fixed Rate Loan Commitments [Line Items]
Loan receivable unfunded commitements fixed rate of interest percentage	4.00%