Investment Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	$ 214,185	$ 217,635
Gross Unrealized Gains	395	261
Gross Unrealized Losses	(1,930)	(3,384)
Fair value	212,650	214,512
U.S. government and federal agency obligations
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	12,653	13,667
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(180)	(303)
Fair value	12,473	13,364
Government sponsored enterprises
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	32,854	32,786
Gross Unrealized Gains	0	2
Gross Unrealized Losses	(235)	(329)
Fair value	32,619	32,459
Obligations of states and political subdivisions
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	47,730	42,666
Gross Unrealized Gains	246	123
Gross Unrealized Losses	(250)	(757)
Fair value	47,726	42,032
Mortgage-backed securities
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	120,948	128,516
Gross Unrealized Gains	149	136
Gross Unrealized Losses	(1,265)	(1,995)
Fair value	119,832	126,657
Mortgage-backed securities \| Residential - government agencies
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	119,961	127,527
Gross Unrealized Gains	140	124
Gross Unrealized Losses	(1,265)	(1,995)
Fair value	118,836	125,656
Mortgage-backed securities \| Commercial - government agencies
Amortized cost and fair value of debt securities available-for-sale
Total Amortized Cost	987	989
Gross Unrealized Gains	9	12
Gross Unrealized Losses	0	0
Fair value	$ 996	$ 1,001

This item represents the cost of debt securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (aa)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27161-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.2)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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