Credit Quality of Loans and Allowance for Loan Losses, Allowance for Loan Losses by Segment (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	$ 8,779	$ 7,370
Charge-offs	(1,678)	(791)
Recoveries	224	152
Provision	1,750	1,800
Ending balance	9,075	8,531
Ending balance: individually evaluated for impairment	563	599
Ending balance: collectively evaluated for impairment	8,512	7,932
Loans [Abstract]
Ending balance	1,224,182	1,118,572	1,137,554
Ending balance: individually evaluated for impairment	6,733	5,805
Ending balance: collectively evaluated for impairment	1,216,644	1,111,767
Ending balance: loans acquired with deteriorated credit quality	805	1,000
Commercial, Financial and Agricultural [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	3,906	1,535
Charge-offs	(1,135)	(245)
Recoveries	42	39
Provision	1,970	2,364
Ending balance	4,783	3,693
Ending balance: individually evaluated for impairment	208	328
Ending balance: collectively evaluated for impairment	4,575	3,365
Loans [Abstract]
Ending balance	454,310	391,241
Ending balance: individually evaluated for impairment	1,793	1,648
Ending balance: collectively evaluated for impairment	452,517	389,593
Ending balance: loans acquired with deteriorated credit quality	0	0
Real Estate - Construction [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	1,046	2,147
Charge-offs	0	0
Recoveries	0	5
Provision	(53)	(1,061)
Ending balance	993	1,091
Ending balance: individually evaluated for impairment	3	54
Ending balance: collectively evaluated for impairment	990	1,037
Loans [Abstract]
Ending balance	86,238	82,851
Ending balance: individually evaluated for impairment	152	262
Ending balance: collectively evaluated for impairment	86,086	82,589
Ending balance: loans acquired with deteriorated credit quality	0	0
Real Estate - Commercial [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	1,389	2,166
Charge-offs	(17)	(18)
Recoveries	42	15
Provision	(23)	80
Ending balance	1,391	2,243
Ending balance: individually evaluated for impairment	55	21
Ending balance: collectively evaluated for impairment	1,336	2,222
Loans [Abstract]
Ending balance	413,565	404,543
Ending balance: individually evaluated for impairment	3,234	2,556
Ending balance: collectively evaluated for impairment	409,631	401,277
Ending balance: loans acquired with deteriorated credit quality	700	710
Real Estate - Residential [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	1,141	936
Charge-offs	(176)	(115)
Recoveries	39	26
Provision	(325)	(328)
Ending balance	679	519
Ending balance: individually evaluated for impairment	152	68
Ending balance: collectively evaluated for impairment	527	451
Loans [Abstract]
Ending balance	153,082	141,689
Ending balance: individually evaluated for impairment	1,214	1,024
Ending balance: collectively evaluated for impairment	151,763	140,375
Ending balance: loans acquired with deteriorated credit quality	105	290
Consumer [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	1,273	543
Charge-offs	(350)	(413)
Recoveries	101	67
Provision	184	760
Ending balance	1,208	957
Ending balance: individually evaluated for impairment	145	128
Ending balance: collectively evaluated for impairment	1,063	829
Loans [Abstract]
Ending balance	108,581	90,571
Ending balance: individually evaluated for impairment	340	315
Ending balance: collectively evaluated for impairment	108,241	90,256
Ending balance: loans acquired with deteriorated credit quality	0	0
Finance Leases Commercial [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	21	41
Charge-offs	0	0
Recoveries	0	0
Provision	(4)	(17)
Ending balance	17	24
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	17	24
Loans [Abstract]
Ending balance	4,750	5,656
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	4,750	5,656
Ending balance: loans acquired with deteriorated credit quality	0	0
Other [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	3	2
Charge-offs	0	0
Recoveries	0	0
Provision	1	2
Ending balance	4	4
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	4	4
Loans [Abstract]
Ending balance	3,656	2,021
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	3,656	2,021
Ending balance: loans acquired with deteriorated credit quality	$ 0	$ 0