Premises and Equipment (Components Included In The Accompanying Balance Sheet) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Gross fixed assets	$ 37,624	$ 34,259
Less: accumulated depreciation and amortization	21,547	20,027
Total net fixed assets	16,077	14,232
Land [Member]
Property, Plant and Equipment [Line Items]
Gross fixed assets	525	544
Bank Premises [Member]
Property, Plant and Equipment [Line Items]
Gross fixed assets	10,476	10,712
Estimated Useful Lives (In years)	39 years
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Gross fixed assets	8,499	6,627
Furniture, Equipment, and Software [Member]
Property, Plant and Equipment [Line Items]
Gross fixed assets	$ 18,124	$ 16,376
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (In years)	5 years
Minimum [Member] | Furniture, Equipment, and Software [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (In years)	3 years
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (In years)	20 years
Maximum [Member] | Furniture, Equipment, and Software [Member]
Property, Plant and Equipment [Line Items]
Estimated Useful Lives (In years)	7 years