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Securities, Held-to-maturity Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Securities Held-to-Maturity [Abstract]    
Amortized cost $ 649 $ 659
Gross unrealized gains 0 1
Gross unrealized losses 0 0
Fair value 649 660
State and Political Subdivisions [Member]    
Securities Held-to-Maturity [Abstract]    
Amortized cost 649 659
Gross unrealized gains 0 1
Gross unrealized losses 0 0
Fair value $ 649 $ 660