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Investment Securities (Details 2) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017 USD ($) Investment	Dec. 31, 2016 USD ($) Investment
Summary of gross unrealized losses on investment securities and fair market value of related securities
Number of investments, Less than 12 months | Investment	57	63
Available-for-sale Securities, Less than 12 months, Fair Value	$ 58,839	$ 47,809
Available-for-sale Securities, Less than 12 months, Unrealized losses	$ 556	$ 897
Number of investments, 12 months or longer | Investment	4	2
Available-for-sale Securities, 12 months or longer, Fair Value	$ 5,829	$ 3,991
Available-for-sale Securities, 12 Months or longer, Unrealized losses	$ 56	$ 30
Number of investments, Total | Investment	61	65
Available-for-sale Securities, Fair Value, Total	$ 64,668	$ 51,800
Available-for-sale Securities, Unrealized losses, Total	$ 612	$ 927
US government agencies [Member]
Summary of gross unrealized losses on investment securities and fair market value of related securities
Number of investments, Less than 12 months | Investment	8	5
Available-for-sale Securities, Less than 12 months, Fair Value	$ 6,480	$ 5,144
Available-for-sale Securities, Less than 12 months, Unrealized losses	$ 72	$ 113
Number of investments, 12 months or longer | Investment
Available-for-sale Securities, 12 months or longer, Fair Value
Available-for-sale Securities, 12 Months or longer, Unrealized losses
Number of investments, Total | Investment	8	5
Available-for-sale Securities, Fair Value, Total	$ 6,480	$ 5,144
Available-for-sale Securities, Unrealized losses, Total	$ 72	$ 113
SBA securities [Member]
Summary of gross unrealized losses on investment securities and fair market value of related securities
Number of investments, Less than 12 months | Investment	1	1
Available-for-sale Securities, Less than 12 months, Fair Value	$ 3,002	$ 1,437
Available-for-sale Securities, Less than 12 months, Unrealized losses	$ 16	$ 16
Number of investments, 12 months or longer | Investment	1
Available-for-sale Securities, 12 months or longer, Fair Value	$ 1,414
Available-for-sale Securities, 12 Months or longer, Unrealized losses	$ 5
Number of investments, Total | Investment	2	1
Available-for-sale Securities, Fair Value, Total	$ 4,416	$ 1,437
Available-for-sale Securities, Unrealized losses, Total	$ 21	$ 16
State and political subdivisions [Member]
Summary of gross unrealized losses on investment securities and fair market value of related securities
Number of investments, Less than 12 months | Investment	14	32
Available-for-sale Securities, Less than 12 months, Fair Value	$ 6,492	$ 13,936
Available-for-sale Securities, Less than 12 months, Unrealized losses	$ 72	$ 292
Number of investments, 12 months or longer | Investment
Available-for-sale Securities, 12 months or longer, Fair Value
Available-for-sale Securities, 12 Months or longer, Unrealized losses
Number of investments, Total | Investment	14	32
Available-for-sale Securities, Fair Value, Total	$ 6,491	$ 13,936
Available-for-sale Securities, Unrealized losses, Total	$ 72	$ 292
Mortgage-backed securities [Member]
Summary of gross unrealized losses on investment securities and fair market value of related securities
Number of investments, Less than 12 months | Investment	34	25
Available-for-sale Securities, Less than 12 months, Fair Value	$ 42,865	$ 27,292
Available-for-sale Securities, Less than 12 months, Unrealized losses	$ 396	$ 476
Number of investments, 12 months or longer | Investment	3	2
Available-for-sale Securities, 12 months or longer, Fair Value	$ 4,415	$ 3,991
Available-for-sale Securities, 12 Months or longer, Unrealized losses	$ 51	$ 30
Number of investments, Total | Investment	37	27
Available-for-sale Securities, Fair Value, Total	$ 47,280	$ 31,283
Available-for-sale Securities, Unrealized losses, Total	$ 447	$ 506

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