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Commitments and Contingencies (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Dec. 31, 2018
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Guarantee commitment $ 2,743  
Probable loan loss experience on unfunded obligations [Member]    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Estimate of possible loss 250 $ 225
Commitments to extend credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commitments to extend credit 308,595 312,274
Undisbursed lines of credit    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commitments to extend credit $ 306,105 309,824
Undisbursed lines of credit | Minimum    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commitments to extend credit, term of agreement 1 month  
Undisbursed lines of credit | Maximum    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commitments to extend credit, term of agreement 12 months  
Undisbursed portions of construction loans    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commitments to extend credit $ 66,412 70,752
Standby letters of credit and financial guarantees    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commitments to extend credit $ 2,490 $ 2,450
Standby letters of credit and financial guarantees | Maximum    
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]    
Commitments to extend credit, term of agreement 1 year