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Investment Securities (Details 1) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Loan maturity distribution by type and related interest rate
Available-for-sale Securities, Contractual Maturities, Less than one year, Value	$ 1,787
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield	1.21%
Available-for-sale Securities, Contractual Maturities, One to five years, Value	$ 5,185	$ 3,268
Available-for-sale Securities, Contractual Maturities, One to five years, Yield	1.59%	1.55%
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value	$ 29,931	$ 25,976
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield	2.18%	2.10%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value	$ 41,537	$ 35,236
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield	2.23%	1.85%
Investment securities available for sale, Value	$ 78,440	$ 64,480
Available-for-sale Securities, Contractual Securities, Yield Total	2.13%	1.93%
US government agencies [Member]
Loan maturity distribution by type and related interest rate
Available-for-sale Securities, Contractual Maturities, Less than one year, Value	$ 997
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield	1.15%
Available-for-sale Securities, Contractual Maturities, One to five years, Value	$ 1,517	$ 997
Available-for-sale Securities, Contractual Maturities, One to five years, Yield	2.04%	1.15%
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value	$ 6,196	$ 5,162
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield	2.39%	2.23%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield
Investment securities available for sale, Value	$ 8,710	$ 6,159
Available-for-sale Securities, Contractual Securities, Yield Total	2.19%	2.06%
SBA securities [Member]
Loan maturity distribution by type and related interest rate
Available-for-sale Securities, Contractual Maturities, Less than one year, Value
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield
Available-for-sale Securities, Contractual Maturities, One to five years, Value
Available-for-sale Securities, Contractual Maturities, One to five years, Yield
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield
Available-for-sale Securities, Contractual Maturities, Over ten years, Value	$ 4,339	$ 1,437
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield	2.48%	1.32%
Investment securities available for sale, Value	$ 4,339	$ 1,437
Available-for-sale Securities, Contractual Securities, Yield Total	2.48%	1.32%
State and political subdivisions [Member]
Loan maturity distribution by type and related interest rate
Available-for-sale Securities, Contractual Maturities, Less than one year, Value
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield
Available-for-sale Securities, Contractual Maturities, One to five years, Value	$ 3,668	$ 2,271
Available-for-sale Securities, Contractual Maturities, One to five years, Yield	1.64%	1.73%
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value	$ 11,730	$ 12,287
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield	2.44%	2.35%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value	$ 4,959	$ 5,916
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield	2.88%	2.77%
Investment securities available for sale, Value	$ 20,357	$ 20,474
Available-for-sale Securities, Contractual Securities, Yield Total	2.40%	2.40%
Mortgage-backed securities [Member]
Loan maturity distribution by type and related interest rate
Available-for-sale Securities, Contractual Maturities, Less than one year, Value	$ 790
Available-for-sale Securities, Contractual Maturities, Less than one year, Yield	1.30%
Available-for-sale Securities, Contractual Maturities, One to five years, Value
Available-for-sale Securities, Contractual Maturities, One to five years, Yield
Available-for-sale Securities, Contractual Maturities, Five to ten years, Value	$ 12,005	$ 8,527
Available-for-sale Securities, Contractual Maturities, Five to ten years, Yield	1.80%	1.64%
Available-for-sale Securities, Contractual Maturities, Over ten years, Value	$ 32,239	$ 27,883
Available-for-sale Securities, Contractual Maturities, Over ten years, Yield	2.04%	1.68%
Investment securities available for sale, Value	$ 45,034	$ 36,410
Available-for-sale Securities, Contractual Securities, Yield Total	1.97%	1.67%

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Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

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