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Fair Value Disclosures Fair Value Disclosures - Unobservable Inputs (Details) - Fair Value, Nonrecurring [Member]
$ in Thousands
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans $ 2,262 $ 2,185
Other real estate owned 5,894 1,757
Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans 2,262 2,185
Other real estate owned 5,894 1,757
Appraisal And Discounted Cash Flow [Member] | Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans $ 2,262 $ 2,185
Appraisal And Discounted Cash Flow [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member] | Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans, measurement input 0.20 0.22
Appraisal [Member] | Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other real estate owned $ 5,894 $ 1,757
Appraisal [Member] | Measurement Input, Discount Rate [Member] | Weighted Average [Member] | Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other real estate owned, measurement input 0.27 0.29