Loans and Allowance for Loan Losses (Details 6) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 31, 2016	Dec. 31, 2015
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	$ 6,753	$ 6,675
Impaired loans without a valuation allowance, Unpaid Principal Balance	7,465	7,375
Impaired loans without a valuation allowance, Average Recorded Investment	6,716	6,999
Impaired loans without a valuation allowance, Interest Income Recognized	71	183
Impaired loans with a valuation allowance, Recorded Investment	385	418
Impaired loans with a valuation allowance, Unpaid Principal Balance	418	418
Impaired loans with a valuation allowance, Related Allowance	225	258
Impaired loans with a valuation allowance, Average Recorded Investment	402	448
Impaired loans with a valuation allowance, Interest Income Recognized	0	0
Total impaired loans, Recorded Investment	7,138	7,093
Total impaired loans, Unpaid Principal Balance	7,883	7,793
Total impaired loans, Related Allowance	225	258
Total impaired loans, Average Recorded Investment	7,118	7,447
Total impaired loans, Interest Income Recognized	71	183
Commercial Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	1,951	1,952
Impaired loans without a valuation allowance, Unpaid Principal Balance	1,951	1,952
Impaired loans without a valuation allowance, Average Recorded Investment	1,952	1,898
Impaired loans without a valuation allowance, Interest Income Recognized	41	73
Impaired loans with a valuation allowance, Recorded Investment	0	0
Impaired loans with a valuation allowance, Unpaid Principal Balance	0	0
Impaired loans with a valuation allowance, Related Allowance	0	0
Impaired loans with a valuation allowance, Average Recorded Investment	0	0
Impaired loans with a valuation allowance, Interest Income Recognized	0	0
Consumer Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	3,684	3,641
Impaired loans without a valuation allowance, Unpaid Principal Balance	4,396	4,341
Impaired loans without a valuation allowance, Average Recorded Investment	3,663	4,003
Impaired loans without a valuation allowance, Interest Income Recognized	26	81
Impaired loans with a valuation allowance, Recorded Investment	0	0
Impaired loans with a valuation allowance, Unpaid Principal Balance	0	0
Impaired loans with a valuation allowance, Related Allowance	0	0
Impaired loans with a valuation allowance, Average Recorded Investment	0	0
Impaired loans with a valuation allowance, Interest Income Recognized	0	0
Construction and Land Development [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	1,070	1,033
Impaired loans without a valuation allowance, Unpaid Principal Balance	1,070	1,033
Impaired loans without a valuation allowance, Average Recorded Investment	1,052	1,044
Impaired loans without a valuation allowance, Interest Income Recognized	3	26
Impaired loans with a valuation allowance, Recorded Investment	0	0
Impaired loans with a valuation allowance, Unpaid Principal Balance	0	0
Impaired loans with a valuation allowance, Related Allowance	0	0
Impaired loans with a valuation allowance, Average Recorded Investment	0	0
Impaired loans with a valuation allowance, Interest Income Recognized	0	0
Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	48	49
Impaired loans without a valuation allowance, Unpaid Principal Balance	48	49
Impaired loans without a valuation allowance, Average Recorded Investment	49	54
Impaired loans without a valuation allowance, Interest Income Recognized	1	3
Impaired loans with a valuation allowance, Recorded Investment	385	418
Impaired loans with a valuation allowance, Unpaid Principal Balance	418	418
Impaired loans with a valuation allowance, Related Allowance	225	258
Impaired loans with a valuation allowance, Average Recorded Investment	402	448
Impaired loans with a valuation allowance, Interest Income Recognized	0	0
Consumer and Other Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	0	0
Impaired loans without a valuation allowance, Unpaid Principal Balance	$ 0	0
Impaired loans without a valuation allowance, Average Recorded Investment		0
Impaired loans without a valuation allowance, Interest Income Recognized	$ 0	0
Impaired loans with a valuation allowance, Recorded Investment	0	0
Impaired loans with a valuation allowance, Unpaid Principal Balance	0	0
Impaired loans with a valuation allowance, Related Allowance	0	0
Impaired loans with a valuation allowance, Average Recorded Investment	0	0
Impaired loans with a valuation allowance, Interest Income Recognized	$ 0	$ 0

Total amount of allowance for credit losses related to recorded investment.

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 15
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 14A
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-URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953550-111524

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 17
-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5258-111524

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-Publisher FASB
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-Topic 310
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-Paragraph 15
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-URI http://asc.fasb.org/extlink&oid=49124121&loc=d3e5212-111524

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