Credit Quality of Loans and Allowance for Loan Losses, Allowance for Loan Losses by Segment (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	$ 8,779	$ 7,370
Charge-offs	(688)	(524)
Recoveries	124	61
Provision	550	550
Ending balance	8,765	7,457
Ending balance: individually evaluated for impairment	348	687
Ending balance: collectively evaluated for impairment	8,417	6,770
Loans [Abstract]
Ending balance	1,184,189	1,037,859	1,137,554	[1]
Ending balance: individually evaluated for impairment	6,865	6,631
Ending balance: collectively evaluated for impairment	1,176,467	1,026,974
Ending balance: loans acquired with deteriorated credit quality	857	4,254
Commercial, Financial and Agricultural [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	3,906	1,535
Charge-offs	(431)	(181)
Recoveries	14	16
Provision	749	212
Ending balance	4,238	1,582
Ending balance: individually evaluated for impairment	86	467
Ending balance: collectively evaluated for impairment	4,152	1,115
Loans [Abstract]
Ending balance	435,523	315,397
Ending balance: individually evaluated for impairment	2,273	1,648
Ending balance: collectively evaluated for impairment	433,250	313,749
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	(1)	0
Recoveries	0	5
Provision	36	111
Ending balance	1,081	2,263
Ending balance: individually evaluated for impairment	3	51
Ending balance: collectively evaluated for impairment	1,078	2,212
Loans [Abstract]
Ending balance	78,988	82,508
Ending balance: individually evaluated for impairment	154	835
Ending balance: collectively evaluated for impairment	78,834	81,673
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	(13)	(18)
Recoveries	37	10
Provision	8	115
Ending balance	1,421	2,273
Ending balance: individually evaluated for impairment	57	21
Ending balance: collectively evaluated for impairment	1,364	2,252
Loans [Abstract]
Ending balance	408,546	405,705
Ending balance: individually evaluated for impairment	3,195	2,688
Ending balance: collectively evaluated for impairment	404,652	399,051
Ending balance: loans acquired with deteriorated credit quality	699	3,966
Real Estate - Residential [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	1,141	936
Charge-offs	(84)	(109)
Recoveries	8	1
Provision	(172)	41
Ending balance	893	869
Ending balance: individually evaluated for impairment	71	42
Ending balance: collectively evaluated for impairment	822	827
Loans [Abstract]
Ending balance	150,551	138,284
Ending balance: individually evaluated for impairment	951	1,205
Ending balance: collectively evaluated for impairment	149,442	136,791
Ending balance: loans acquired with deteriorated credit quality	158	288
Consumer [Member]
Allowance for loan losses by portfolio [Roll Forward]
Beginning balance	1,273	543
Charge-offs	(159)	(216)
Recoveries	65	29
Provision	(69)	69
Ending balance	1,110	425
Ending balance: individually evaluated for impairment	131	106
Ending balance: collectively evaluated for impairment	979	319
Loans [Abstract]
Ending balance	101,869	88,898
Ending balance: individually evaluated for impairment	292	255
Ending balance: collectively evaluated for impairment	101,577	88,643
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	(2)	1
Ending balance	19	42
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	19	42
Loans [Abstract]
Ending balance	5,102	4,962
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	5,102	4,962
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	0	1
Ending balance	3	3
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	3	3
Loans [Abstract]
Ending balance	3,610	2,105
Ending balance: individually evaluated for impairment	0	0
Ending balance: collectively evaluated for impairment	3,610	2,105
Ending balance: loans acquired with deteriorated credit quality	$ 0	$ 0

[1] Derived from audited financial statements.