Loans and Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	$ 4,602	$ 5,952
Impaired loans without a valuation allowance, Unpaid Principal Balance	4,727	6,073
Impaired loans without a valuation allowance, Average Recorded Investment	5,231	7,914
Impaired loans without a valuation allowance, Interest Income Recognized	135	326
Impaired loans with a valuation allowance, Recorded Investment	411	2,886
Impaired loans with a valuation allowance, Unpaid Principal Balance	448	3,021
Impaired loans with a valuation allowance, Related Allowance	51	696
Impaired loans with a valuation allowance, Average Recorded Investment	1,316	1,760
Impaired loans with a valuation allowance, Interest Income Recognized	13	174
Total impaired loans, Recorded Investment	5,013	8,838
Total impaired loans, Unpaid Principal Balance	5,175	9,094
Total impaired loans, Related Allowance	51	696
Total impaired loans, Average Recorded Investment	6,547	9,674
Total impaired loans, Interest Income Recognized	148	500
Commercial Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	1,918	2,428
Impaired loans without a valuation allowance, Unpaid Principal Balance	1,970	2,480
Impaired loans without a valuation allowance, Average Recorded Investment	2,248	4,386
Impaired loans without a valuation allowance, Interest Income Recognized	59	127
Impaired loans with a valuation allowance, Recorded Investment	394	2,029
Impaired loans with a valuation allowance, Unpaid Principal Balance	431	2,029
Impaired loans with a valuation allowance, Related Allowance	47	404
Impaired loans with a valuation allowance, Average Recorded Investment	949	683
Impaired loans with a valuation allowance, Interest Income Recognized	12	98
Consumer Real Estate Mortgage [Member]
Financing Receivable, Impaired [Line Items]
Impaired loans without a valuation allowance, Recorded Investment	1,490	1,738
Impaired loans without a valuation allowance, Unpaid Principal Balance	1,507	1,742
Impaired loans without a valuation allowance, Average Recorded Investment	1,580	1,880
Impaired loans without a valuation allowance, Interest Income Recognized	51	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	114	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	230	753
Impaired loans without a valuation allowance, Unpaid Principal Balance	243	766
Impaired loans without a valuation allowance, Average Recorded Investment	405	462
Impaired loans without a valuation allowance, Interest Income Recognized	6	44
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	964	1,033
Impaired loans without a valuation allowance, Unpaid Principal Balance	1,007	1,085
Impaired loans without a valuation allowance, Average Recorded Investment	998	1,186
Impaired loans without a valuation allowance, Interest Income Recognized	19	41
Impaired loans with a valuation allowance, Recorded Investment	17	516
Impaired loans with a valuation allowance, Unpaid Principal Balance	17	516
Impaired loans with a valuation allowance, Related Allowance	4	277
Impaired loans with a valuation allowance, Average Recorded Investment	253	401
Impaired loans with a valuation allowance, Interest Income Recognized	$ 1	$ 52