Allowance for Loan Losses, Nonperforming Assets and Impaired Loans, Financing Receivable, Impaired (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended				12 Months Ended
	Sep. 30, 2012		Sep. 30, 2012		Sep. 30, 2011		Dec. 31, 2011
Investment in impaired loans and related allowance [Abstract]
Principal Balance	$ 11,965		$ 11,965		$ 10,040		$ 12,596
(A) Total Recorded Investment	11,993	[1]	11,993	[1]
Recorded Investment in (A) for Which There is No Related Allowance	11,086	[1]	11,086	[1]
Recorded Investment in (A) for Which There is a Related Allowance	907	[1]	907	[1]
Related Allowance	327		327		1,829		1,123
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	14,231	[1]	13,831	[1],[2]	7,834	[2]	8,734	[2]
Interest Income Recognized	106		292		90		141
Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							12,596	[3]
(A) Total Recorded Investment							12,608	[1],[3]
Recorded Investment in (A) for Which There is No Related Allowance							5,506	[1],[3]
Recorded Investment in (A) for Which There is a Related Allowance							7,102	[1],[3]
Related Allowance							1,123	[3]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							8,734	[1],[3]
Interest Income Recognized							141	[3]
Commercial and Industrial [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							139	[3],[4]
(A) Total Recorded Investment							139	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							0	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							139	[1],[3],[4]
Related Allowance							62	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							553	[1],[3],[4]
Interest Income Recognized							0	[3],[4]
Real Estate Construction [Member] | Construction, Residential [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	123		123
(A) Total Recorded Investment	118	[1]	118	[1]
Recorded Investment in (A) for Which There is No Related Allowance	118	[1]	118	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	1,428	[1]	1,486	[1]
Interest Income Recognized	0		0
Real Estate Construction [Member] | Construction, other [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	3,500		3,500
(A) Total Recorded Investment	3,498	[1]	3,498	[1]
Recorded Investment in (A) for Which There is No Related Allowance	3,498	[1]	3,498	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	3,498	[1]	4,568	[1]
Interest Income Recognized	58		184
Consumer Real Estate [Member] | Equity lines [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	0		0
(A) Total Recorded Investment	0	[1]	0	[1]
Recorded Investment in (A) for Which There is No Related Allowance	0	[1]	0	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	6	[1]	135	[1]
Interest Income Recognized	0		2
Consumer Real Estate [Member] | Residential closed end first liens [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	790		790
(A) Total Recorded Investment	793	[1]	793	[1]
Recorded Investment in (A) for Which There is No Related Allowance	638	[1]	638	[1]
Recorded Investment in (A) for Which There is a Related Allowance	155	[1]	155	[1]
Related Allowance	47		47
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	1,038	[1]	889	[1]
Interest Income Recognized	3		7
Consumer Real Estate [Member] | Residential closed end junior liens [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	159		159
(A) Total Recorded Investment	159	[1]	159	[1]
Recorded Investment in (A) for Which There is No Related Allowance	159	[1]	159	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	220	[1]	245	[1]
Interest Income Recognized	0		0
Consumer Real Estate [Member] | Closed end Consumer Real Estate [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							237	[3],[4]
(A) Total Recorded Investment							237	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							237	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							0	[1],[3],[4]
Related Allowance							0	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							450	[1],[3],[4]
Interest Income Recognized							3	[3],[4]
Commercial Real Estate [Member] | Multifamily real estate [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	2,034		2,034
(A) Total Recorded Investment	2,049	[1]	2,049	[1]
Recorded Investment in (A) for Which There is No Related Allowance	1,787	[1]	1,787	[1]
Recorded Investment in (A) for Which There is a Related Allowance	262	[1]	262	[1]
Related Allowance	44		44
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	2,083	[1]	1,226	[1]
Interest Income Recognized	16		24
Commercial Real Estate [Member] | Hotel [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							3,319	[3],[4]
(A) Total Recorded Investment							3,320	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							2,794	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							526	[1],[3],[4]
Related Allowance							16	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							3,445	[1],[3],[4]
Interest Income Recognized							41	[3],[4]
Commercial Real Estate [Member] | Medical Professionals [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							66	[3],[4]
(A) Total Recorded Investment							67	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							0	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							67	[1],[3],[4]
Related Allowance							66	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							67	[1],[3],[4]
Interest Income Recognized							5	[3],[4]
Commercial Real Estate [Member] | General Contractors [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							703	[3],[4]
(A) Total Recorded Investment							703	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							176	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							527	[1],[3],[4]
Related Allowance							402	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							112	[1],[3],[4]
Interest Income Recognized							4	[3],[4]
Commercial Real Estate [Member] | Commercial real estate, other [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	0		0
(A) Total Recorded Investment	0	[1]	0	[1]
Recorded Investment in (A) for Which There is No Related Allowance	0	[1]	0	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	0	[1]	0	[1]
Interest Income Recognized	0		0
Commercial Real Estate [Member] | Commercial real estate, other [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							1,113	[3],[4]
(A) Total Recorded Investment							1,112	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							425	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							687	[1],[3],[4]
Related Allowance							474	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							1,139	[1],[3],[4]
Interest Income Recognized							24	[3],[4]
Commercial Real Estate [Member] | College Housing [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							366	[3],[4]
(A) Total Recorded Investment							366	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							366	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							0	[1],[3],[4]
Related Allowance							0	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							281	[1],[3],[4]
Interest Income Recognized							7	[3],[4]
Commercial Real Estate [Member] | Commercial real estate, owner occupied [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	4,825		4,825
(A) Total Recorded Investment	4,842	[1]	4,842	[1]
Recorded Investment in (A) for Which There is No Related Allowance	4,842	[1]	4,842	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	5,401	[1]	4,656	[1]
Interest Income Recognized	28		72
Commercial Real Estate [Member] | Office and Retail [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							3,500	[3],[4]
(A) Total Recorded Investment							3,500	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							0	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							3,500	[1],[3],[4]
Related Allowance							57	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							292	[1],[3],[4]
Interest Income Recognized							0	[3],[4]
Commercial Non Real Estate [Member] | Commercial and Industrial [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	534		534
(A) Total Recorded Investment	534	[1]	534	[1]
Recorded Investment in (A) for Which There is No Related Allowance	44	[1]	44	[1]
Recorded Investment in (A) for Which There is a Related Allowance	490	[1]	490	[1]
Related Allowance	236		236
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	549	[1]	587	[1]
Interest Income Recognized	1		3
Public Sector and IDA [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	0		0
(A) Total Recorded Investment	0	[1]	0	[1]
Recorded Investment in (A) for Which There is No Related Allowance	0	[1]	0	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	0	[1]	0	[1]
Interest Income Recognized	0		0
Consumer Non Real Estate [Member] | Credit cards [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	0		0
(A) Total Recorded Investment	0	[1]	0	[1]
Recorded Investment in (A) for Which There is No Related Allowance	0	[1]	0	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	0	[1]	0	[1]
Interest Income Recognized	0		0
Consumer Non Real Estate [Member] | Automobile [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	0		0
(A) Total Recorded Investment	0	[1]	0	[1]
Recorded Investment in (A) for Which There is No Related Allowance	0	[1]	0	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	8	[1]	5	[1]
Interest Income Recognized	0		0
Consumer Non Real Estate [Member] | Other consumer loans [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance	0		0
(A) Total Recorded Investment	0	[1]	0	[1]
Recorded Investment in (A) for Which There is No Related Allowance	0	[1]	0	[1]
Recorded Investment in (A) for Which There is a Related Allowance	0	[1]	0	[1]
Related Allowance	0		0
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment	0	[1]	34	[1]
Interest Income Recognized	0		0
Construction Development and land [Member] | Commercial [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							252	[3],[4]
(A) Total Recorded Investment							252	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							252	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							0	[1],[3],[4]
Related Allowance							0	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							252	[1],[3],[4]
Interest Income Recognized							8	[3],[4]
Construction Development and land [Member] | Residential [Member] | Scenario, Previously Reported [Member]
Investment in impaired loans and related allowance [Abstract]
Principal Balance							2,901	[3],[4]
(A) Total Recorded Investment							2,912	[1],[3],[4]
Recorded Investment in (A) for Which There is No Related Allowance							1,256	[1],[3],[4]
Recorded Investment in (A) for Which There is a Related Allowance							1,656	[1],[3],[4]
Related Allowance							46	[3],[4]
Impaired financing receivable average recorded investment and interest income recognized [Abstract]
Average Recorded Investment							2,143	[1],[3],[4]
Interest Income Recognized							$ 49	[3],[4]

[1] Recorded investment includes the unpaid principal balance and any accrued interest and net deferred fees.

[2] Recorded investment includes principal, accrued interest and net deferred fees.

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

[4] Only classes with impaired loans are shown.