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Fair Value Disclosures Fair Value Disclosures - Unobservable Inputs (Details) - Fair Value, Nonrecurring [Member]
$ in Thousands
Jun. 30, 2019
USD ($)
Dec. 31, 2018
USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans $ 3,870 $ 671
Other real estate owned 1,814 2,495
Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans 3,870 671
Other real estate owned 1,814 $ 2,495
Appraisal And Discounted Cash Flow [Member] | Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Impaired loans $ 3,870  
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 0.09  
Appraisal [Member] | Level 3 [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Other real estate owned $ 1,814  
Appraisal [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   0.44
Other real estate owned, measurement input 0.12 0.23