Allowance for Loan Losses (Details) - USD ($) $ in Thousands	6 Months Ended		12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015
Allowance for loan losses [Roll Forward]
Beginning balance	$ 11,046	$ 11,786	$ 11,786
Charge-offs	(532)	(307)	(3,691)
Recoveries	663	390	658
Provision	350	25	2,293
Ending balance	11,527	11,894	11,046
Ending allowance balance attributable to loans:
Individually evaluated for impairment				$ 2,133	$ 2,664	$ 2,972
Collectively evaluated for impairment				9,394	8,382	8,922
Total ending allowance balance	11,046	11,786	11,786	11,527	11,046	11,894
Loans:
Individually evaluated for impairment				19,382	20,844	19,907
Collectively evaluated for impairment				835,265	784,837	753,183
Total Loans				854,647	805,681	773,090
Construction [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	905	550	550
Charge-offs	(388)	0	0
Recoveries	132	31	246
Provision	347	(21)	109
Ending balance	996	560	905
Ending allowance balance attributable to loans:
Individually evaluated for impairment				0	53	60
Collectively evaluated for impairment				996	852	500
Total ending allowance balance	905	550	550	996	905	560
Loans:
Individually evaluated for impairment				30	203	223
Collectively evaluated for impairment				42,917	39,470	30,558
Total Loans				42,947	39,673	30,781
Real Estate Loans Secured by Farmland [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	192	179	179
Charge-offs	0	0	0
Recoveries	0	0	0
Provision	(18)	11	13
Ending balance	174	190	192
Ending allowance balance attributable to loans:
Individually evaluated for impairment				0	0	0
Collectively evaluated for impairment				174	192	190
Total ending allowance balance	192	179	179	174	192	190
Loans:
Individually evaluated for impairment				7,917	7,903	7,903
Collectively evaluated for impairment				10,958	11,159	11,602
Total Loans				18,875	19,062	19,505
Secured by 1-4 family residential [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	3,341	3,966	3,966
Charge-offs	(7)	(12)	(344)
Recoveries	394	324	359
Provision	(221)	(156)	(640)
Ending balance	3,507	4,122	3,341
Ending allowance balance attributable to loans:
Individually evaluated for impairment				1,094	1,120	1,412
Collectively evaluated for impairment				2,413	2,221	2,710
Total ending allowance balance	3,341	3,966	3,966	3,507	3,341	4,122
Loans:
Individually evaluated for impairment				4,496	5,127	4,723
Collectively evaluated for impairment				298,704	274,969	267,475
Total Loans				303,200	280,096	272,198
Other real estate loans [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	3,761	3,916	3,916
Charge-offs	(126)	(9)	(9)
Recoveries	23	21	28
Provision	96	35	(174)
Ending balance	3,754	3,963	3,761
Ending allowance balance attributable to loans:
Individually evaluated for impairment				222	464	454
Collectively evaluated for impairment				3,532	3,297	3,509
Total ending allowance balance	3,761	3,916	3,916	3,754	3,761	3,963
Loans:
Individually evaluated for impairment				4,117	4,196	4,230
Collectively evaluated for impairment				271,680	253,839	261,662
Total Loans				275,797	258,035	265,892
Commercial [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	1,706	2,354	2,354
Charge-offs	0	(246)	(3,281)
Recoveries	63	8	14
Provision	384	(272)	2,619
Ending balance	2,153	1,844	1,706
Ending allowance balance attributable to loans:
Individually evaluated for impairment				30	27	43
Collectively evaluated for impairment				2,123	1,679	1,801
Total ending allowance balance	1,706	2,354	2,354	2,153	1,706	1,844
Loans:
Individually evaluated for impairment				952	1,517	795
Collectively evaluated for impairment				193,760	188,965	166,747
Total Loans				194,712	190,482	167,542
Consumer [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	1,141	821	821
Charge-offs	(11)	(40)	(57)
Recoveries	51	6	11
Provision	(238)	428	366
Ending balance	943	1,215	1,141
Ending allowance balance attributable to loans:
Individually evaluated for impairment				787	1,000	1,003
Collectively evaluated for impairment				156	141	212
Total ending allowance balance	$ 1,141	$ 821	$ 821	943	1,141	1,215
Loans:
Individually evaluated for impairment				1,870	1,898	2,033
Collectively evaluated for impairment				17,246	16,435	15,139
Total Loans				$ 19,116	$ 18,333	$ 17,172