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Troubled Debt Restructurings (Details)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
USD ($)
Investments
Dec. 31, 2017
USD ($)
Investments
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification    
Renewals deemed a concession 7 6
Reduced or deferred payments 1 2
Converted to interest only
Maturity date extensions
Total number of loans 8 8
Pre-modification outstanding recorded investment | $ $ 3,549 $ 2,465
Post-modification outstanding recorded investment | $ $ 4,080 $ 2,612
Commercial [Member] | Owner occupied RE [Member]    
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification    
Renewals deemed a concession 1 1
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans 1 1
Pre-modification outstanding recorded investment | $ $ 506 $ 254
Post-modification outstanding recorded investment | $ $ 592 $ 310
Commercial [Member] | Non-owner occupied RE [Member]    
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification    
Renewals deemed a concession 1
Reduced or deferred payments 1
Converted to interest only
Maturity date extensions
Total number of loans 1 1
Pre-modification outstanding recorded investment | $ $ 1,287 $ 976
Post-modification outstanding recorded investment | $ $ 1,287 $ 976
Commercial [Member] | Business [Member]    
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification    
Renewals deemed a concession 4 2
Reduced or deferred payments 1
Converted to interest only
Maturity date extensions
Total number of loans 4 3
Pre-modification outstanding recorded investment | $ $ 1,207 $ 591
Post-modification outstanding recorded investment | $ $ 1,532 $ 600
Consumer [Member] | Real estate [Member]    
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification    
Renewals deemed a concession 2 1
Reduced or deferred payments
Converted to interest only
Maturity date extensions
Total number of loans 2 1
Pre-modification outstanding recorded investment | $ $ 549 $ 281
Post-modification outstanding recorded investment | $ $ 669 $ 270
Consumer [Member] | Home equity [Member]    
Summary of concession at the time of modification and the recorded investment in TDRs before and after their modification    
Renewals deemed a concession   1
Reduced or deferred payments   1
Converted to interest only  
Maturity date extensions  
Total number of loans   2
Pre-modification outstanding recorded investment | $   $ 363
Post-modification outstanding recorded investment | $   $ 456