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Investment Securities (Details 1) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Summary of amortized costs and fair values of investment securities available for sale by contractual maturity
Due within one year, Amortized Cost	$ 1,435
Due after one through five years, Amortized Cost	2,677	3,303
Due after five through ten years, Amortized Cost	24,796	26,234
Due after ten years, Amortized Cost	39,273	35,707
Available for sale, Amortized Cost	68,181	65,244
Due within one year, Fair Value	1,427
Due after one through five years, Fair Value	2,666	3,268
Due after five through ten years, Fair Value	24,645	25,976
Due after ten years, Fair Value	38,865	35,236
Available for sale, Fair Value	$ 67,603	$ 64,480

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Amount after adjustments of available-for-sale debt securities at cost, maturing in the sixth fiscal year through the tenth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount after adjustments of available-for-sale debt securities at cost, maturing in the second fiscal year through the fifth fiscal year following the latest fiscal year. Adjustments include, but are not limited to, accretion, amortization, collection of cash, previous other-than-temporary impairments (OTTI) recognized in earnings less cumulative-effect adjustments, and fair value hedge accounting adjustments. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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