Loans and Allowance for Loan Losses (Details 5) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
Mar. 31, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	$ 5,137	$ 5,952
Impaired loans without a valuation allowance, Unpaid Principal Balance	5,260	6,073
Impaired loans without a valuation allowance, Average Recorded Investment	5,545	7,914
Impaired loans without a valuation allowance, Interest Income Recognized	69	326
Impaired loans with a valuation allowance, Recorded Investment	651	2,886
Impaired loans with a valuation allowance, Unpaid Principal Balance	660	3,021
Impaired loans with a valuation allowance, Related Allowance	264	696
Impaired loans with a valuation allowance, Average Recorded Investment	1,769	1,760
Impaired loans with a valuation allowance, Interest Income Recognized	18	174
Total impaired loans, Recorded Investment	5,788	8,838
Total impaired loans, Unpaid Principal Balance	5,920	9,094
Total impaired loans, Related Allowance	264	696
Total impaired loans, Average Recorded Investment	7,314	9,674
Total impaired loans, Interest Income Recognized	87	500
Commercial Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	2,397	2,428
Impaired loans without a valuation allowance, Unpaid Principal Balance	2,449	2,480
Impaired loans without a valuation allowance, Average Recorded Investment	2,413	4,386
Impaired loans without a valuation allowance, Interest Income Recognized	33	127
Impaired loans with a valuation allowance, Recorded Investment	425	2,029
Impaired loans with a valuation allowance, Unpaid Principal Balance	434	2,029
Impaired loans with a valuation allowance, Related Allowance	51	404
Impaired loans with a valuation allowance, Average Recorded Investment	1,227	683
Impaired loans with a valuation allowance, Interest Income Recognized	5	98
Consumer Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	1,513	1,738
Impaired loans without a valuation allowance, Unpaid Principal Balance	1,528	1,742
Impaired loans without a valuation allowance, Average Recorded Investment	1,625	1,880
Impaired loans without a valuation allowance, Interest Income Recognized	24	114
Impaired loans with a valuation allowance, Recorded Investment	0	341
Impaired loans with a valuation allowance, Unpaid Principal Balance	0	476
Impaired loans with a valuation allowance, Related Allowance	0	15
Impaired loans with a valuation allowance, Average Recorded Investment	171	676
Impaired loans with a valuation allowance, Interest Income Recognized	0	24
Construction and Land Development [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	231	753
Impaired loans without a valuation allowance, Unpaid Principal Balance	244	766
Impaired loans without a valuation allowance, Average Recorded Investment	492	462
Impaired loans without a valuation allowance, Interest Income Recognized	3	44
Impaired loans with a valuation allowance, Recorded Investment		0
Impaired loans with a valuation allowance, Unpaid Principal Balance		0
Impaired loans with a valuation allowance, Related Allowance		0
Impaired loans with a valuation allowance, Average Recorded Investment		0
Impaired loans with a valuation allowance, Interest Income Recognized		0
Commercial and Industrial Loans [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	996	1,033
Impaired loans without a valuation allowance, Unpaid Principal Balance	1,039	1,085
Impaired loans without a valuation allowance, Average Recorded Investment	1,015	1,186
Impaired loans without a valuation allowance, Interest Income Recognized	9	41
Impaired loans with a valuation allowance, Recorded Investment	226	516
Impaired loans with a valuation allowance, Unpaid Principal Balance	226	516
Impaired loans with a valuation allowance, Related Allowance	213	277
Impaired loans with a valuation allowance, Average Recorded Investment	371	401
Impaired loans with a valuation allowance, Interest Income Recognized	$ 13	$ 52

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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)

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