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Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Available-For-Sale-Securities-And-Held-To-Maturity-Securities
Investment securities available for sale, Cost Basis	$ 142,426	$ 129,550
Investment securities available for sale, Gross Unrealized Gains	339	960
Investment securities available for sale, Gross Unrealized Losses	(4,012)	(1,372)
Available for Sale, Fair Value, Total	138,753	129,138
Investment securities held to maturity, Cost Basis	38,673	38,752
Investment securities held to maturity, Gross Unrealized Gains	100	390
Investment securities held to maturity, Gross Unrealized Losses	(1,428)	(331)
Held to Maturity, Fair Value, Total	37,345	38,811
U.S. Agency [Member]
Available-For-Sale-Securities-And-Held-To-Maturity-Securities
Investment securities available for sale, Cost Basis	6,731	6,612
Investment securities available for sale, Gross Unrealized Gains	0	0
Investment securities available for sale, Gross Unrealized Losses	(308)	(40)
Available for Sale, Fair Value, Total	6,423	6,572
U.S. Agency mortgage-backed securities [Member]
Available-For-Sale-Securities-And-Held-To-Maturity-Securities
Investment securities available for sale, Cost Basis	87,075	79,854
Investment securities available for sale, Gross Unrealized Gains	232	611
Investment securities available for sale, Gross Unrealized Losses	(2,308)	(719)
Available for Sale, Fair Value, Total	84,999	79,746
Investment securities held to maturity, Cost Basis	8,294	9,740
Investment securities held to maturity, Gross Unrealized Gains	65	149
Investment securities held to maturity, Gross Unrealized Losses	(256)	(45)
Held to Maturity, Fair Value, Total	8,103	9,844
Municipal [Member]
Available-For-Sale-Securities-And-Held-To-Maturity-Securities
Investment securities available for sale, Cost Basis	11,240	7,198
Investment securities available for sale, Gross Unrealized Gains	15	27
Investment securities available for sale, Gross Unrealized Losses	(489)	(189)
Available for Sale, Fair Value, Total	10,766	7,036
Investment securities held to maturity, Cost Basis	24,341	22,970
Investment securities held to maturity, Gross Unrealized Gains	25	203
Investment securities held to maturity, Gross Unrealized Losses	(956)	(238)
Held to Maturity, Fair Value, Total	23,410	22,935
Corporate bonds [Member]
Available-For-Sale-Securities-And-Held-To-Maturity-Securities
Investment securities available for sale, Cost Basis	37,380	35,886
Investment securities available for sale, Gross Unrealized Gains	92	322
Investment securities available for sale, Gross Unrealized Losses	(907)	(424)
Available for Sale, Fair Value, Total	36,565	35,784
Corporate bonds and other securities [Member]
Available-For-Sale-Securities-And-Held-To-Maturity-Securities
Investment securities held to maturity, Cost Basis	6,038	6,042
Investment securities held to maturity, Gross Unrealized Gains	10	38
Investment securities held to maturity, Gross Unrealized Losses	(216)	(48)
Held to Maturity, Fair Value, Total	$ 5,832	$ 6,032

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