XML 51 R41.htm IDEA: XBRL DOCUMENT v3.21.2
Fair Value Measurement of Assets and Liabilities - Additional Information (Details) - USD ($)
9 Months Ended
Sep. 30, 2021
Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Collateral dependent loans amortized cost $ 136,100,000  
Specific valuation allowance allocations $ 67,900,000  
Valuation of loan servicing rights, prepayment rate 13.60%  
Valuation of loan servicing rights, discount rate 9.00%  
Minimum    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Discount adjustment of the appraisals of foreclosed assets 0.60%  
Maximum    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Discount adjustment of the appraisals of foreclosed assets 4.60%  
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 $ 68,200,000  
Loan servicing rights $ 0 $ 15,603,000