Allowance for Loan Losses (Details 2) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	$ 5,305	$ 13,693
60-89 Days	9,316	6,466
90 Days	21,773	23,566
Total past due	36,394	43,725
Current	1,358,919	1,291,660
Total loans	1,395,313	1,335,385
90 Days and still accruing	189	500
Nonaccrual loans	66,465	75,275
PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	347	181
60-89 Days	134	115
90 Days	851	434
Total past due	1,332	730
Current	102,652	133,563
Total loans	103,984	134,293
90 Days and still accruing	373	420
Nonaccrual loans	3,204	110
RE Mortgage [Member] | Residential [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	152	1,715
60-89 Days	499	750
90 Days	1,828	3,279
Total past due	2,479	5,744
Current	118,204	112,576
Total loans	120,683	118,320
90 Days and still accruing	189
Nonaccrual loans	6,899	8,525
RE Mortgage [Member] | Residential [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days
60-89 Days		76
90 Days	261
Total past due	261	76
Current	7,043	14,674
Total loans	7,304	14,750
90 Days and still accruing	63
Nonaccrual loans	271
RE Mortgage [Member] | Commercial [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	2,350	7,509
60-89 Days	7,551	1,171
90 Days	10,510	9,892
Total past due	20,411	18,572
Current	744,956	681,110
Total loans	765,367	699,682
90 Days and still accruing		500
Nonaccrual loans	39,417	43,765
RE Mortgage [Member] | Commercial [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	339	118
60-89 Days
90 Days	213	420
Total past due	552	538
Current	74,938	92,890
Total loans	75,490	93,428
90 Days and still accruing	310	420
Nonaccrual loans	2,497
Home Equity Lines [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	1,943	2,586
60-89 Days	1,016	2,629
90 Days	3,251	3,129
Total past due	6,210	8,344
Current	305,539	313,490
Total loans	311,749	321,834
90 Days and still accruing
Nonaccrual loans	8,075	8,307
Home Equity Lines [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days		63
60-89 Days	67	39
90 Days	377	14
Total past due	444	116
Current	16,740	20,786
Total loans	17,184	20,902
90 Days and still accruing
Nonaccrual loans	392	110
Home Equity Loans [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	131	52
60-89 Days	55	281
90 Days	333	114
Total past due	519	447
Current	13,215	13,873
Total loans	13,734	14,320
90 Days and still accruing
Nonaccrual loans	620	509
Home Equity Loans [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days
60-89 Days
90 Days
Total past due
Current	332	367
Total loans	332	367
90 Days and still accruing
Nonaccrual loans
Auto Indirect [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	123	181
60-89 Days	15	56
90 Days	86	130
Total past due	224	367
Current	4,843	10,454
Total loans	5,067	10,821
90 Days and still accruing
Nonaccrual loans	225	509
Auto Indirect [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days
60-89 Days
90 Days
Total past due
Current
Total loans
90 Days and still accruing
Nonaccrual loans
Other Consumer [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	40	46
60-89 Days	30	153
90 Days	11	5
Total past due	81	204
Current	23,852	20,066
Total loans	23,933	20,270
90 Days and still accruing
Nonaccrual loans	62	109
Other Consumer [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	8
60-89 Days	3
90 Days
Total past due	11
Current	2,642	3,041
Total loans	2,653	3,041
90 Days and still accruing
Nonaccrual loans	44
C&I [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	497	683
60-89 Days	150	1,334
90 Days	5,361	4,929
Total past due	6,008	6,946
Current	126,154	116,540
Total loans	132,162	123,486
90 Days and still accruing
Nonaccrual loans	6,820	7,257
C&I [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days
60-89 Days	64
90 Days
Total past due	64
Current	957	1,805
Total loans	1,021	1,805
90 Days and still accruing
Nonaccrual loans
Construction [Member] | Residential [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days	69	921
60-89 Days		92
90 Days	138	2,088
Total past due	207	3,101
Current	10,367	10,807
Total loans	10,574	13,908
90 Days and still accruing
Nonaccrual loans	3,798	5,627
Construction [Member] | Residential [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days
60-89 Days
90 Days
Total past due
Current
Total loans
90 Days and still accruing
Nonaccrual loans
Construction [Member] | Commercial [Member] | Originated loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days
60-89 Days
90 Days	255
Total past due	255
Current	11,789	12,744
Total loans	12,044	12,744
90 Days and still accruing
Nonaccrual loans	549	667
Construction [Member] | Commercial [Member] | PNCI loans [Member]
Analysis of Past Due and Nonaccrual Loans
30-59 Days
60-89 Days
90 Days
Total past due
Current
Total loans
90 Days and still accruing
Nonaccrual loans