Securities, Available For Sale securities and Held-to-maturity Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Amortized Cost [Abstract]
Due in one year or less	$ 1,019
Due after one through five years	11,096
Amortized Cost	12,115	$ 10,169
Estimated Fair Value [Abstract]
Due in one year or less	1,011
Due after one through five years	10,964
Fair Value	11,975	10,119
Amortized Cost [Abstract]
Due in one year or less	8,003
Due after one through five years	9,976
Due after five years through ten years	1,008
Mortgage-backed securities	27,500
Amortized Cost	46,487	54,303
Estimated Fair Value [Abstract]
Due in one year or less	7,975
Due after one through five years	9,894
Due after five years through ten years	1,024
Mortgage-backed securities	26,539
Fair Value	45,432	54,004
Collateral Pledged
Estimated Fair Value [Abstract]
HTM Securities pledged as collateral for borrowings	$ 0	$ 0