Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	$ 45,452	$ 43,224	$ 45,914	$ 42,571
Charge-offs	(4,188)	(5,230)	(9,110)	(12,279)
Recoveries	1,214	407	1,678	1,108
Provisions	3,371	5,561	7,367	12,562
Ending balance	45,849	43,962	45,849	43,962
Ending balance:
Total loans	1,552,482	1,396,062	1,552,482	1,396,062	1,551,032
Individually evaluated for impairment, Allowance for Loan Losses	6,040	5,809	6,040	5,809
Loans pooled for evaluation, Allowance for Loan Losses	34,722	35,783	34,722	35,783
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	5,087	2,370	5,087	2,370
Individually evaluated for impairment loans, net of unearned fees	111,265	105,782	111,265	105,782
Loans pooled for evaluation, net of unearned fees	1,364,984	1,240,437	1,364,984	1,240,437
Loans acquired with deteriorated credit quality, net of unearned fees	76,233	49,843	76,233	49,843
RE Mortgage [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance					45,914
Ending balance					45,914
RE Mortgage [Member] | Residential [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	3,157	3,544	2,404	3,007
Charge-offs	(325)	(321)	(548)	(1,446)
Recoveries	27		27	112
Provisions	599	(702)	1,575	848
Ending balance	3,458	2,521	3,458	2,521
Ending balance:
Total loans	134,015	127,083	134,015	127,083	139,586
Individually evaluated for impairment, Allowance for Loan Losses	551	955	551	955
Loans pooled for evaluation, Allowance for Loan Losses	2,536	1,552	2,536	1,552
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	371	14	371	14
Individually evaluated for impairment loans, net of unearned fees	9,765	11,292	9,765	11,292
Loans pooled for evaluation, net of unearned fees	118,184	109,393	118,184	109,393
Loans acquired with deteriorated credit quality, net of unearned fees	6,066	6,398	6,066	6,398
RE Mortgage [Member] | Commercial [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	9,981	12,027	13,217	12,700
Charge-offs	(363)	(1,621)	(1,668)	(1,989)
Recoveries	782	38	818	66
Provisions	(834)	2,975	(2,801)	2,642
Ending balance	9,566	13,419	9,566	13,419
Ending balance:
Total loans	850,132	701,674	850,132	701,674	826,336
Individually evaluated for impairment, Allowance for Loan Losses	781	2,181	781	2,181
Loans pooled for evaluation, Allowance for Loan Losses	8,531	11,224	8,531	11,224
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	254	14	254	14
Individually evaluated for impairment loans, net of unearned fees	69,488	65,734	69,488	65,734
Loans pooled for evaluation, net of unearned fees	748,232	611,279	748,232	611,279
Loans acquired with deteriorated credit quality, net of unearned fees	32,412	24,661	32,412	24,661
Home Equity Lines [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	22,032	16,296	18,258	15,054
Charge-offs	(2,478)	(1,928)	(5,103)	(5,529)
Recoveries	84	86	147	247
Provisions	1,964	2,026	8,300	6,708
Ending balance	21,602	16,480	21,602	16,480
Ending balance:
Total loans	346,917	332,532	346,917	332,532	357,305
Individually evaluated for impairment, Allowance for Loan Losses	1,880	1,408	1,880	1,408
Loans pooled for evaluation, Allowance for Loan Losses	18,443	14,629	18,443	14,629
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	1,279	443	1,279	443
Individually evaluated for impairment loans, net of unearned fees	9,401	8,271	9,401	8,271
Loans pooled for evaluation, net of unearned fees	323,566	317,959	323,566	317,959
Loans acquired with deteriorated credit quality, net of unearned fees	13,950	6,302	13,950	6,302
Home Equity Loans [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	1,267	911	1,101	795
Charge-offs	(117)	(264)	(158)	(264)
Recoveries	6		9	2
Provisions	3	524	207	638
Ending balance	1,159	1,171	1,159	1,171
Ending balance:
Total loans	14,274	14,905	14,274	14,905	14,844
Individually evaluated for impairment, Allowance for Loan Losses	42	129	42	129
Loans pooled for evaluation, Allowance for Loan Losses	1,038	1,042	1,038	1,042
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	79		79
Individually evaluated for impairment loans, net of unearned fees	546	492	546	492
Loans pooled for evaluation, net of unearned fees	13,523	14,413	13,523	14,413
Loans acquired with deteriorated credit quality, net of unearned fees	205		205
Auto Indirect [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	575	481	215	1,229
Charge-offs	(31)	(100)	(71)	(235)
Recoveries	42	56	99	183
Provisions	(153)	(53)	190	(793)
Ending balance	433	384	433	384
Ending balance:
Total loans	6,496	16,767	6,496	16,767	10,821
Individually evaluated for impairment, Allowance for Loan Losses	16	113	16	113
Loans pooled for evaluation, Allowance for Loan Losses	417	271	417	271
Loans acquired with deteriorated credit quality, Allowance for Loan Losses
Individually evaluated for impairment loans, net of unearned fees	319	936	319	936
Loans pooled for evaluation, net of unearned fees	6,177	15,831	6,177	15,831
Loans acquired with deteriorated credit quality, net of unearned fees
Other Consumer [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	600	704	932	701
Charge-offs	(309)	(304)	(648)	(533)
Recoveries	187	165	442	374
Provisions	143	257	(105)	280
Ending balance	621	822	621	822
Ending balance:
Total loans	25,561	18,660	25,561	18,660	23,360
Individually evaluated for impairment, Allowance for Loan Losses	32	22	32	22
Loans pooled for evaluation, Allowance for Loan Losses	589	800	589	800
Loans acquired with deteriorated credit quality, Allowance for Loan Losses
Individually evaluated for impairment loans, net of unearned fees	178	93	178	93
Loans pooled for evaluation, net of unearned fees	25,344	18,567	25,344	18,567
Loans acquired with deteriorated credit quality, net of unearned fees	39		39
C&I [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	4,550	6,967	6,545	5,991
Charge-offs	(296)	(202)	(577)	(1,758)
Recoveries	86	41	136	62
Provisions	1,354	6	(410)	2,517
Ending balance	5,694	6,812	5,694	6,812
Ending balance:
Total loans	139,733	140,531	139,733	140,531	139,131
Individually evaluated for impairment, Allowance for Loan Losses	1,502	206	1,502	206
Loans pooled for evaluation, Allowance for Loan Losses	2,533	4,968	2,533	4,968
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	1,659	1,638	1,659	1,638
Individually evaluated for impairment loans, net of unearned fees	10,152	5,385	10,152	5,385
Loans pooled for evaluation, net of unearned fees	118,194	127,109	118,194	127,109
Loans acquired with deteriorated credit quality, net of unearned fees	11,387	8,037	11,387	8,037
Construction [Member] | Residential [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	1,672	1,395	1,817	1,824
Charge-offs	(201)	(395)	(269)	(430)
Recoveries		20		22
Provisions	208	677	131	281
Ending balance	1,679	1,697	1,679	1,697
Ending balance:
Total loans	19,259	22,479	19,259	22,479	22,122
Individually evaluated for impairment, Allowance for Loan Losses	201	286	201	286
Loans pooled for evaluation, Allowance for Loan Losses	540	1,150	540	1,150
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	938	261	938	261
Individually evaluated for impairment loans, net of unearned fees	4,407	6,250	4,407	6,250
Loans pooled for evaluation, net of unearned fees	6,386	11,784	6,386	11,784
Loans acquired with deteriorated credit quality, net of unearned fees	8,466	4,445	8,466	4,445
Construction [Member] | Commercial [Member]
Summary of activity in the allowance for loan losses, and ending balance of loans, net of unearned fees for the periods indicated.
Beginning balance	1,618	899	1,425	1,270
Charge-offs	(68)	(95)	(68)	(95)
Recoveries		1		40
Provisions	87	(149)	280	(559)
Ending balance	1,637	656	1,637	656
Ending balance:
Total loans	16,095	21,431	16,095	21,431	17,527
Individually evaluated for impairment, Allowance for Loan Losses	1,035	509	1,035	509
Loans pooled for evaluation, Allowance for Loan Losses	95	147	95	147
Loans acquired with deteriorated credit quality, Allowance for Loan Losses	507		507
Individually evaluated for impairment loans, net of unearned fees	7,009	7,329	7,009	7,329
Loans pooled for evaluation, net of unearned fees	5,378	14,102	5,378	14,102
Loans acquired with deteriorated credit quality, net of unearned fees	$ 3,708		$ 3,708