Loans (Loans Acquired With Deterioration of Credit Quality) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, acquired with deteriorated credit quality	$ 15,176	$ 18,461
Financing receivable, acquired with deteriorated credit quality, net of deferred income	14,700	17,954
Commercial Real Estate
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, acquired with deteriorated credit quality	2,145	3,754
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, acquired with deteriorated credit quality	74	109
Residential Real Estate
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, acquired with deteriorated credit quality	12,873	14,497
Consumer
Financing Receivable, Recorded Investment [Line Items]
Financing receivable, acquired with deteriorated credit quality	$ 84	$ 101