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Investment Securities (Detail Textuals)
$ in Thousands
Sep. 30, 2019
USD ($)
security
Dec. 31, 2018
USD ($)
security
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]    
Number of securities in unrealized loss position 12 32
Number of securities in unrealized loss position in for less than twelve months 3 4
Number of securities in unrealized loss position in for greater than twelve months 9 28
Aggregate unrealized loss position of the securities | $ $ 340 $ 4,225
Maximum    
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]    
Aggregate unrealized loss position of the securities | $ $ 500 500
Mortgage-backed securities - residential    
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]    
Number of securities in unrealized loss position in for less than twelve months 2  
State and political subdivisions    
Schedule Of Available For Sale and Held To Maturity Securities [Line Items]    
Aggregate unrealized loss position of the securities | $ $ 340 $ 4,060