Allowance for Loan Losses (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	$ 15,650	$ 28,280
Charge-Offs	(4,456)	(17,076)
Recoveries	214	440
Provision	3,885	3,750
Ending Balance	15,293	15,394
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	6,016	7,527
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	9,277	7,867
Total End of Period Allowance Balance	15,293	15,394
Total End of Period Loan Balance, Individually Evaluated for Impairment	80,583	90,962
Total End of Period Loan Balance, Collectively Evaluated for Impairment	635,778	668,148
Total End of Period Loan Balance	716,361	759,110	716,321
Reduction in allowance for loan losses	1,530
Loan balance for reviewing, minimum	50,000
NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	4,741	4,841
Total End of Period Loan Balance, Individually Evaluated for Impairment	65,959	71,669
Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	1,275	2,686
Total End of Period Loan Balance, Individually Evaluated for Impairment	14,624	19,293
Total End of Period Loan Balance	69,439		74,777
Impaired loans below the $50,000 review threshold	748	796
Industrial [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	11,284		8,422
Industrial [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	60		269
Commercial Construction [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	56,368		58,546
Commercial Construction [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	24,650		26,986
Residential Construction [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	4,169		3,530
Residential Construction [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	205		0
Farmland [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	48,748		48,225
Farmland [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Loan Balance	2,687		3,148
Commercial and Industrial [Member] | Commercial [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	1,071	4,415
Charge-Offs	(230)	(703)
Recoveries	96	120
Provision	105	(1,187)
Ending Balance	1,042	2,645
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	520	606
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	522	2,039
Total End of Period Allowance Balance	1,042	2,645
Total End of Period Loan Balance, Individually Evaluated for Impairment	4,131	2,007
Total End of Period Loan Balance, Collectively Evaluated for Impairment	51,143	46,459
Total End of Period Loan Balance	55,274	48,466
Commercial and Industrial [Member] | Commercial [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	300	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	1,721	256
Commercial and Industrial [Member] | Commercial [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	220	606
Total End of Period Loan Balance, Individually Evaluated for Impairment	2,410	1,751
Commercial and Industrial [Member] | Industrial [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	297	698
Charge-Offs	0	(455)
Recoveries	0	0
Provision	0	(178)
Ending Balance	297	65
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	7
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	297	58
Total End of Period Allowance Balance	297	65
Total End of Period Loan Balance, Individually Evaluated for Impairment	0	370
Total End of Period Loan Balance, Collectively Evaluated for Impairment	11,284	11,595
Total End of Period Loan Balance	11,284	11,965
Commercial and Industrial [Member] | Industrial [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	0	149
Commercial and Industrial [Member] | Industrial [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	7
Total End of Period Loan Balance, Individually Evaluated for Impairment	0	221
Real Estate [Member] | Commercial [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	6,448	8,030
Charge-Offs	(3,397)	(10,890)
Recoveries	18	160
Provision	2,876	6,086
Ending Balance	5,945	3,386
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	1,652	2,058
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	4,293	1,328
Total End of Period Allowance Balance	5,945	3,386
Total End of Period Loan Balance, Individually Evaluated for Impairment	38,919	32,022
Total End of Period Loan Balance, Collectively Evaluated for Impairment	270,017	298,170
Total End of Period Loan Balance	308,936	330,192
Real Estate [Member] | Commercial [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	1,462	1,453
Total End of Period Loan Balance, Individually Evaluated for Impairment	33,395	25,803
Real Estate [Member] | Commercial [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	190	605
Total End of Period Loan Balance, Individually Evaluated for Impairment	5,524	6,219
Real Estate [Member] | Commercial Construction [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	3,123	4,126
Charge-Offs	(474)	(4,062)
Recoveries	35	26
Provision	578	1,886
Ending Balance	3,262	1,976
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	2,276	1,811
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	986	165
Total End of Period Allowance Balance	3,262	1,976
Total End of Period Loan Balance, Individually Evaluated for Impairment	24,484	40,801
Total End of Period Loan Balance, Collectively Evaluated for Impairment	31,884	27,625
Total End of Period Loan Balance	56,368	68,426
Real Estate [Member] | Commercial Construction [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	2,111	1,421
Total End of Period Loan Balance, Individually Evaluated for Impairment	22,595	35,781
Real Estate [Member] | Commercial Construction [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	165	390
Total End of Period Loan Balance, Individually Evaluated for Impairment	1,889	5,020
Real Estate [Member] | Residential Construction [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	138	520
Charge-Offs	0	0
Recoveries	0	0
Provision	0	(144)
Ending Balance	138	376
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	138	376
Total End of Period Allowance Balance	138	376
Total End of Period Loan Balance, Individually Evaluated for Impairment	204	0
Total End of Period Loan Balance, Collectively Evaluated for Impairment	3,965	4,046
Total End of Period Loan Balance	4,169	4,046
Real Estate [Member] | Residential Construction [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	0	0
Real Estate [Member] | Residential Construction [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	204	0
Real Estate [Member] | Residential [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	3,695	5,942
Charge-Offs	(275)	(751)
Recoveries	5	41
Provision	285	(1,234)
Ending Balance	3,710	3,998
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	1,568	2,931
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	2,142	1,067
Total End of Period Allowance Balance	3,710	3,998
Total End of Period Loan Balance, Individually Evaluated for Impairment	10,255	14,754
Total End of Period Loan Balance, Collectively Evaluated for Impairment	182,935	186,365
Total End of Period Loan Balance	193,190	201,119
Real Estate [Member] | Residential [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	868	1,967
Total End of Period Loan Balance, Individually Evaluated for Impairment	5,951	9,456
Real Estate [Member] | Residential [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	700	964
Total End of Period Loan Balance, Individually Evaluated for Impairment	4,304	5,298
Real Estate [Member] | Farmland [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	365	944
Charge-Offs	(39)	(21)
Recoveries	5	0
Provision	0	(300)
Ending Balance	331	623
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	51
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	331	572
Total End of Period Allowance Balance	331	623
Total End of Period Loan Balance, Individually Evaluated for Impairment	2,543	903
Total End of Period Loan Balance, Collectively Evaluated for Impairment	46,205	47,107
Total End of Period Loan Balance	48,748	48,010
Real Estate [Member] | Farmland [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	2,277	212
Real Estate [Member] | Farmland [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	51
Total End of Period Loan Balance, Individually Evaluated for Impairment	266	691
Consumer and Other [Member] | Consumer [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	205	3,074
Charge-Offs	(41)	(125)
Recoveries	48	87
Provision	41	(905)
Ending Balance	253	2,131
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	63
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	253	2,068
Total End of Period Allowance Balance	253	2,131
Total End of Period Loan Balance, Individually Evaluated for Impairment	27	73
Total End of Period Loan Balance, Collectively Evaluated for Impairment	29,625	31,998
Total End of Period Loan Balance	29,652	32,071
Consumer and Other [Member] | Consumer [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	20	12
Consumer and Other [Member] | Consumer [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	63
Total End of Period Loan Balance, Individually Evaluated for Impairment	7	61
Consumer and Other [Member] | Other [Member]
Activity in allowance for loan losses, segregated by class of loan [Roll Forward]
Beginning Balance	308	531
Charge-Offs	0	(69)
Recoveries	7	6
Provision	0	(274)
Ending Balance	315	194
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Allowance Balance, Collectively Evaluated for Impairment	315	194
Total End of Period Allowance Balance	315	194
Total End of Period Loan Balance, Individually Evaluated for Impairment	20	32
Total End of Period Loan Balance, Collectively Evaluated for Impairment	8,720	14,783
Total End of Period Loan Balance	8,740	14,815
Consumer and Other [Member] | Other [Member] | NonaccrualTdr [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	0	0
Consumer and Other [Member] | Other [Member] | Substandard [Member]
Breakdowns of allowance for loan losses, segregated by impairment methodology [Abstract]
Total End of Period Allowance Balance, Individually Evaluated for Impairment	0	0
Total End of Period Loan Balance, Individually Evaluated for Impairment	$ 20	$ 32