Investment Securities (Details 1) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Available for sale
Contractual Maturities, Less than one year, Amount	$ 282	$ 1,427
Contractual Maturities, Less than one year, Yield	0.52%	1.10%
Contractual Maturities, One to five years, Amount	$ 3,971	$ 2,666
Contractual Maturities, One to five years, Yield	2.06%	1.59%
Contractual Maturities, Five to ten years, Amount	$ 20,985	$ 24,645
Contractual Maturities, Five to ten years, Yield	2.28%	2.27%
Contractual Maturities, Over ten years, Amount	$ 33,268	$ 38,865
Contractual Maturities, Over ten years, Yield	2.23%	2.15%
Contractual Maturities, Total, Amount	$ 58,506	$ 67,603
Contractual Maturities, Total, Yield	2.22%	2.17%
US government agencies [Member]
Available for sale
Contractual Maturities, Less than one year, Amount		$ 995
Contractual Maturities, Less than one year, Yield		1.15%
Contractual Maturities, One to five years, Amount	$ 2,655	$ 1,503
Contractual Maturities, One to five years, Yield	2.12%	2.04%
Contractual Maturities, Five to ten years, Amount	$ 4,875	$ 6,155
Contractual Maturities, Five to ten years, Yield	2.48%	2.40%
Contractual Maturities, Over ten years, Amount
Contractual Maturities, Over ten years, Yield
Contractual Maturities, Total, Amount	$ 7,530	$ 8,653
Contractual Maturities, Total, Yield	2.35%	2.20%
SBA securities [Member]
Available for sale
Contractual Maturities, Less than one year, Amount
Contractual Maturities, Less than one year, Yield
Contractual Maturities, One to five years, Amount
Contractual Maturities, One to five years, Yield
Contractual Maturities, Five to ten years, Amount
Contractual Maturities, Five to ten years, Yield
Contractual Maturities, Over ten years, Amount	$ 3,825	$ 4,063
Contractual Maturities, Over ten years, Yield	2.53%	2.45%
Contractual Maturities, Total, Amount	$ 3,825	$ 4,063
Contractual Maturities, Total, Yield	2.53%	2.45%
State and political subdivisions [Member]
Available for sale
Contractual Maturities, Less than one year, Amount
Contractual Maturities, Less than one year, Yield
Contractual Maturities, One to five years, Amount	$ 521	$ 1,163
Contractual Maturities, One to five years, Yield	2.14%	1.96%
Contractual Maturities, Five to ten years, Amount	$ 4,523	$ 7,162
Contractual Maturities, Five to ten years, Yield	3.11%	2.84%
Contractual Maturities, Over ten years, Amount	$ 1,304	$ 3,071
Contractual Maturities, Over ten years, Yield	2.63%	2.76%
Contractual Maturities, Total, Amount	$ 6,348	$ 11,396
Contractual Maturities, Total, Yield	2.93%	2.73%
Mortgage-backed securities [Member]
Available for sale
Contractual Maturities, Less than one year, Amount	$ 282	$ 432
Contractual Maturities, Less than one year, Yield	0.52%	0.99%
Contractual Maturities, One to five years, Amount	$ 795
Contractual Maturities, One to five years, Yield	1.81%
Contractual Maturities, Five to ten years, Amount	$ 11,587	$ 11,328
Contractual Maturities, Five to ten years, Yield	1.87%	1.84%
Contractual Maturities, Over ten years, Amount	$ 28,139	$ 31,731
Contractual Maturities, Over ten years, Yield	2.17%	2.06%
Contractual Maturities, Total, Amount	$ 40,803	$ 43,491
Contractual Maturities, Total, Yield	2.06%	1.99%