Investment Securities (Amortized Cost and Fair Values of Securities ) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 276,849	$ 251,788
Gross Unrealized Gains	4,061	2,865
Gross Unrealized Losses	(3,532)	(4,740)
Fair Value, available for sale	277,378	249,913
Mortgage-backed securities, Government sponsored agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	68,335	92,871
Gross Unrealized Gains	225	802
Gross Unrealized Losses	(762)	(1,156)
Fair Value, available for sale	67,798	92,517
Collateralized mortgage obligations, Government sponsored agencies
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	88,488	68,621
Gross Unrealized Gains	58	269
Gross Unrealized Losses	(1,296)	(843)
Fair Value, available for sale	87,250	68,047
Municipals
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	107,060	77,474
Gross Unrealized Gains	3,709	1,716
Gross Unrealized Losses	(274)	(1,508)
Fair Value, available for sale	110,495	77,682
Corporate obligations
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	12,966	12,822
Gross Unrealized Gains	69	78
Gross Unrealized Losses	(1,200)	(1,233)
Fair Value, available for sale	$ 11,835	$ 11,667

Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 25
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=75030427&loc=d3e22054-111558

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
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-Section 50
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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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-Publisher FASB
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Amount before tax of unrealized loss in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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