Commitments and Contingent Liabilities - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Liabilities [Line Items]
Fixed rate loan commitments maturity year	2050
Variable rate loan commitments maturity year	2048
Maximum
Commitments And Contingencies Liabilities [Line Items]
Commitments to make loans period	90 days
Loan commitments fixed interest rate	18.00%
Loan commitments variable interest rate	8.25%
Minimum
Commitments And Contingencies Liabilities [Line Items]
Loan commitments fixed interest rate	1.25%
Loan commitments variable interest rate	1.25%