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Investment Securities (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	$ 233,496	$ 229,706
Gross Unrealized Gains	77	158
Gross Unrealized Losses	(5,972)	(3,322)
Fair value	227,601	226,542
U.S. Treasury
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	1,983	1,980
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(53)	(13)
Fair value	1,930	1,967
U.S. government and federal agency obligations
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	11,443	12,341
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(351)	(268)
Fair value	11,092	12,073
Government sponsored enterprises
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	46,773	37,321
Gross Unrealized Gains	4	0
Gross Unrealized Losses	(718)	(424)
Fair value	46,059	36,897
Obligations of states and political subdivisions
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	42,054	47,019
Gross Unrealized Gains	38	114
Gross Unrealized Losses	(633)	(477)
Fair value	41,459	46,656
Residential - government agencies
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	131,243	131,045
Gross Unrealized Gains	35	44
Gross Unrealized Losses	(4,217)	(2,140)
Fair value	$ 127,061	$ 128,949

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
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-Topic 320
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