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Fair Value Measurement of Assets and Liabilities - Additional Information (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Collateral dependent loans amortized cost $ 111,500  
Specific valuation allowance allocations $ 72,600  
Valuation of loan servicing rights, prepayment rate 16.90%  
Valuation of loan servicing rights, discount rate 9.60%  
Minimum    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Discount adjustment of the appraisals of foreclosed assets 2.90%  
Maximum    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Discount adjustment of the appraisals of foreclosed assets 18.00%  
Fair Value | Non-recurring fair value measurements    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Reported net carrying amount of collateral dependent loans $ 38,900  
Loan servicing rights $ 682 $ 15,603