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Recent accounting standards (Details)
Jan. 01, 2023
Dec. 31, 2022
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Allowance for credit losses and reserve for unfunded loan commitments   3.00%
Subsequent Event    
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]    
Allowance for credit losses and reserve for unfunded loan commitments 10.00%