Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013	Dec. 31, 2012
Allowance for loan losses [Roll Forward]
Beginning balance	$ 13,320		$ 14,311	$ 14,623
Adjustment for the sale of majority interest in consolidated subsidiary	(95)
Charge-offs	(4,308)		(1,381)	(4,271)
Recoveries	909		281	521
Provision	1,960		109	3,438
Ending balance	11,786		13,320	14,311
Ending allowance balance attributable to loans:
Individually evaluated for impairment	2,669		4,655	4,303
Collectively evaluated for impairment	9,117		8,665	10,008
Total ending allowance balance	11,786		13,320	14,311
Loans:
Individually evaluated for impairment	22,158		24,696	26,795
Collectively evaluated for impairment	732,688		703,784	682,682
Total Loans	754,846	[1]	728,480	709,477
Real Estate Construction [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	847		1,258	897
Adjustment for the sale of majority interest in consolidated subsidiary	0
Charge-offs	(1,186)		(394)	(2,152)
Recoveries	258		68	2
Provision	631		(85)	2,511
Ending balance	550		847	1,258
Ending allowance balance attributable to loans:
Individually evaluated for impairment	66		486	166
Collectively evaluated for impairment	484		361	1,092
Total ending allowance balance	550		847	1,258
Loans:
Individually evaluated for impairment	246		2,636	2,969
Collectively evaluated for impairment	32,804		33,389	47,249
Total Loans	33,050		36,025	50,218
Real Estate Loans Secured by Farmland [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	166		135	110
Charge-offs	0		0	0
Recoveries	0		0	0
Provision	13		31	25
Ending balance	179		166	135
Ending allowance balance attributable to loans:
Individually evaluated for impairment	0		0	0
Collectively evaluated for impairment	179		166	135
Total ending allowance balance	179		166	135
Loans:
Individually evaluated for impairment	7,903		0	0
Collectively evaluated for impairment	11,805		16,578	11,876
Total Loans	19,708		16,578	11,876
Real Estate Loans Secured by 1 - 4 Family Residential [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	6,734		6,276	7,465
Adjustment for the sale of majority interest in consolidated subsidiary	(95)
Charge-offs	(1,380)		(785)	(893)
Recoveries	342		140	388
Provision	(1,635)		1,103	(684)
Ending balance	3,966		6,734	6,276
Ending allowance balance attributable to loans:
Individually evaluated for impairment	1,370		3,045	2,724
Collectively evaluated for impairment	2,596		3,689	3,552
Total ending allowance balance	3,966		6,734	6,276
Loans:
Individually evaluated for impairment	5,613		10,411	10,792
Collectively evaluated for impairment	259,603		262,973	249,828
Total Loans	265,216		273,384	260,620
Other Real Estate Loans [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	3,506		4,348	4,385
Adjustment for the sale of majority interest in consolidated subsidiary	0
Charge-offs	(747)		(97)	(760)
Recoveries	110		37	86
Provision	1,047		(782)	637
Ending balance	3,916		3,506	4,348
Ending allowance balance attributable to loans:
Individually evaluated for impairment	294		812	1,045
Collectively evaluated for impairment	3,622		2,694	3,303
Total ending allowance balance	3,916		3,506	4,348
Loans:
Individually evaluated for impairment	4,531		9,142	10,640
Collectively evaluated for impairment	250,705		251,191	244,290
Total Loans	255,236		260,333	254,930
Commercial [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	1,890		2,098	1,621
Adjustment for the sale of majority interest in consolidated subsidiary	0
Charge-offs	(959)		(75)	(394)
Recoveries	104		9	12
Provision	1,319		(142)	859
Ending balance	2,354		1,890	2,098
Ending allowance balance attributable to loans:
Individually evaluated for impairment	292		275	338
Collectively evaluated for impairment	2,062		1,615	1,760
Total ending allowance balance	2,354		1,890	2,098
Loans:
Individually evaluated for impairment	846		2,470	2,364
Collectively evaluated for impairment	162,423		127,084	116,209
Total Loans	163,269		129,554	118,573
Consumer [Member]
Allowance for loan losses [Roll Forward]
Beginning balance	177		196	145
Adjustment for the sale of majority interest in consolidated subsidiary	0
Charge-offs	(36)		(30)	(72)
Recoveries	95		27	33
Provision	585		(16)	90
Ending balance	821		177	196
Ending allowance balance attributable to loans:
Individually evaluated for impairment	647		37	30
Collectively evaluated for impairment	174		140	166
Total ending allowance balance	821		177	196
Loans:
Individually evaluated for impairment	3,019		37	30
Collectively evaluated for impairment	15,348		12,569	13,230
Total Loans	$ 18,367		$ 12,606	$ 13,260

[1] net deferred loan costs and premiums of $3.0 million and $2.4 million, respectively.