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Fair Value Measurements (Qualitative Information About Level 3 Assets Measured at Fair Value on a Nonrecurring Basis) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Fair Value Inputs Assets Qualitative Information [Line Items]    
Collateral dependent impaired loans [1]   $ 2,257
Nonrecurring [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Collateral dependent impaired loans $ 1,720 1,448
Loan servicing right 7,434  
Property acquired through foreclosure or repossession   1,109
Nonrecurring [Member] | Level 3 [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Collateral dependent impaired loans 1,720 1,448
Loan servicing right $ 7,434  
Property acquired through foreclosure or repossession   $ 1,109
Collateral Dependent Impaired Loans [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Minimum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 0.00% 0.00%
Appraisal adjustments 0.00% 0.00%
Collateral Dependent Impaired Loans [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Maximum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 25.00% 20.00%
Appraisal adjustments 100.00% 100.00%
Collateral Dependent Impaired Loans [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Weighted Average [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell 11.00% 5.00%
Appraisal adjustments 15.00% 67.00%
Property Acquired Through Foreclosure Or Repossession [Member] | Nonrecurring [Member] | Level 3 [Member] | Appraisals Of Collateral [Member] | Weighted Average [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount for costs to sell   12.00%
Appraisal adjustments   22.00%
Servicing Contracts [Member] | Nonrecurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Minimum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount rate 10.00%  
Prepayment rates 18.00%  
Servicing Contracts [Member] | Nonrecurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Maximum [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount rate 14.00%  
Prepayment rates 42.00%  
Servicing Contracts [Member] | Nonrecurring [Member] | Level 3 [Member] | Valuation Technique, Discounted Cash Flow [Member] | Weighted Average [Member]    
Fair Value Inputs Assets Qualitative Information [Line Items]    
Discount rate 10.00%  
Prepayment rates 21.00%  
[1] The recorded investment in impaired loans consists of unpaid principal balance, net of charge-offs, interest payments received applied to principal and unamortized deferred loan origination fees and costs. For accruing impaired loans (TDRs for which management has concluded that the collectability of the loan is not in doubt), the recorded investment also includes accrued interest.