Loans (Troubled Debt Restructurings, Subsequently Defaulted) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Financing Receivable, Modifications [Line Items]
Defaulted payment following modification for troubled debt restructurings	$ 0	$ 0	$ 0	$ 857
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	2
Commercial and Industrial Loans and Leases [Member]
Financing Receivable, Modifications [Line Items]
Defaulted payment following modification for troubled debt restructurings	0	0	0	565
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	1
Commercial Real Estate Loans [Member]
Financing Receivable, Modifications [Line Items]
Defaulted payment following modification for troubled debt restructurings	$ 0	$ 0	$ 0	$ 292
Financing Receivable, Modifications, Subsequent Default, Number of Contracts	0	0	0	1