Allowance for Loan Losses, Nonperforming Assets and Impaired Loans, Financing Receivables Past Due (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011		Sep. 30, 2011
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	$ 5,266
90 or More Days Past Due	4,225
90 or More Days Past Due and Still Accruing	114	481		339
Nonaccruals (Including Impaired Nonaccruals)	6,130	5,204		4,344
Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		4,300	[1]
90 or More Days Past Due		3,284	[1]
90 or More Days Past Due and Still Accruing		481	[1]
Nonaccruals (Including Impaired Nonaccruals)		5,204	[1]
Commercial and Industrial [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		31	[1]
90 or More Days Past Due		26	[1]
90 or More Days Past Due and Still Accruing		26	[1]
Nonaccruals (Including Impaired Nonaccruals)		139	[1]
Real Estate Construction [Member] | Construction residential [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	158
90 or More Days Past Due	123
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	123
Real Estate Construction [Member] | Construction other [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	0
90 or More Days Past Due	89
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	89
Consumer Real Estate [Member] | Equity lines [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	14
90 or More Days Past Due	54
90 or More Days Past Due and Still Accruing	30
Nonaccruals (Including Impaired Nonaccruals)	24
Consumer Real Estate [Member] | Equity lines [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Consumer Real Estate [Member] | Consumer Construction [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	2,167
90 or More Days Past Due	593
90 or More Days Past Due and Still Accruing	48
Nonaccruals (Including Impaired Nonaccruals)	972
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	99
90 or More Days Past Due	114
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	198
Consumer Real Estate [Member] | Closed end Consumer Real Estate [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		1,735	[1]
90 or More Days Past Due		658	[1]
90 or More Days Past Due and Still Accruing		346	[1]
Nonaccruals (Including Impaired Nonaccruals)		313	[1]
Commercial Real Estate [Member] | Commercial real estate, owner occupied [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	1,223
90 or More Days Past Due	2,706
90 or More Days Past Due and Still Accruing	20
Nonaccruals (Including Impaired Nonaccruals)	2,953
Commercial Real Estate [Member] | Commercial real estate, other [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	0
90 or More Days Past Due	0
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	0
Commercial Real Estate [Member] | Commercial real estate, other [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		815	[1]
90 or More Days Past Due		488	[1]
90 or More Days Past Due and Still Accruing		63	[1]
Nonaccruals (Including Impaired Nonaccruals)		1,112	[1]
Commercial Real Estate [Member] | Multifamily real estate [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	701
90 or More Days Past Due	433
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	1,278
Commercial Real Estate [Member] | College Housing [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		452	[1]
90 or More Days Past Due		250	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		250	[1]
Commercial Real Estate [Member] | Convenience Stores [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Religious Organizations [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Restaurants [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Office and Retail [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Hotel [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		616	[1]
90 or More Days Past Due		526	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		1,397	[1]
Commercial Real Estate [Member] | Municipalities [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Nonprofits [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Nursing Homes [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Entertainment and Sports [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | Medical Professionals [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Commercial Real Estate [Member] | General Contractors [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		103	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		703	[1]
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	435
90 or More Days Past Due	96
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	490
Public Sector and IDA [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	0
90 or More Days Past Due	0
90 or More Days Past Due and Still Accruing	0
Nonaccruals (Including Impaired Nonaccruals)	0
Consumer Non Real Estate [Member] | Consumer General [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		270	[1]
90 or More Days Past Due		38	[1]
90 or More Days Past Due and Still Accruing		38	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Consumer Non Real Estate [Member] | Automobile [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	283
90 or More Days Past Due	6
90 or More Days Past Due and Still Accruing	5
Nonaccruals (Including Impaired Nonaccruals)	3
Consumer Non Real Estate [Member] | Consumer Overdraft [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Consumer Non Real Estate [Member] | Other Consumer Loans [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	140
90 or More Days Past Due	8
90 or More Days Past Due and Still Accruing	8
Nonaccruals (Including Impaired Nonaccruals)	0
Consumer Non Real Estate [Member] | Credit cards [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due	46
90 or More Days Past Due	3
90 or More Days Past Due and Still Accruing	3
Nonaccruals (Including Impaired Nonaccruals)	0
Consumer Non Real Estate [Member] | Credit cards [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		26	[1]
90 or More Days Past Due		8	[1]
90 or More Days Past Due and Still Accruing		8	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Construction Development and Other land [Member] | Commercial [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		252	[1]
90 or More Days Past Due		0	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		0	[1]
Construction Development and Other land [Member] | Residential [Member] | Scenario, Previously Reported [Member]
Financing receivable recorded investment, past due [Abstract]
30 To 89 Days Past Due		0	[1]
90 or More Days Past Due		1,290	[1]
90 or More Days Past Due and Still Accruing		0	[1]
Nonaccruals (Including Impaired Nonaccruals)		$ 1,290	[1]

[1] Segments at December 31, 2011 are reported using the segmentation method in effect for 2011. The Company began reporting under revised segments beginning in 2012.