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Investment Securities (Details Textual) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Investments [Line Items]
Gross investment gains	$ 32,000	$ 60,000	$ 59,000	$ 123,000
Gross investment losses				6,000
Investment Securities:
Proceeds from sales of investment securities — available for sale	1,600,000	$ 3,200,000	7,206,000	$ 7,422,000
Book value of securities available for sale and held to maturity	$ 111,849,000		$ 111,849,000		$ 104,953,000
Held-to-maturity, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions	106		106
Standard & Poor's, AAA Rating [Member]
Investments [Line Items]
Portfolio rated	59.20%		59.20%		63.50%
Standard & Poor's, A Rating [Member]
Investments [Line Items]
Portfolio rated	11.90%		11.90%		10.10%
Maximum [Member]
Investment Securities:
Consolidated investment securities portfolio modified, years			60 months
Maximum [Member] | Standard & Poor's, A Rating [Member]
Investment Securities:
Consolidated investment securities portfolio modified, years			42 months 9 days
Minimum [Member]
Investment Securities:
Consolidated investment securities portfolio modified, years			24 months
Minimum [Member] | Standard & Poor's, A Rating [Member]
Investment Securities:
Consolidated investment securities portfolio modified, years			41 months 6 days

X

- Definition

Carrying value of available for sale held to maturity and federal home loan bank.

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Consolidated investment securities portfolio modified, years.

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The gain realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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Investment securities.

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The loss realized from the sale, exchange, redemption, or retirement of securities, not separately or otherwise categorized as trading, available-for-sale, or held-to-maturity.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 6
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27290-111563

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The cash inflow associated with the sale of debt and equity securities classified as available-for-sale securities.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 45
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=82896770&loc=d3e26853-111562

Reference 2: http://www.xbrl.org/2003/role/presentationRef
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-Topic 230
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-Section 45
-Paragraph 12
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