Commitments and Credit Risk - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2022
Minimum [Member]
Commitments And Contingencies [Line Items]
Fixed interest rate loan commitments	2.49%
Fixed interest rate loan commitments maturity period	1 month
Maximum [Member]
Commitments And Contingencies [Line Items]
Fixed interest rate loan commitments	18.00%
Fixed interest rate loan commitments maturity period	368 months