Loans (Troubled Debt Restructurings Loans Modified) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013 loan
Financing Receivable, Impaired [Line Items]
Financing Receivable, Number of Contracts, Duration	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment, Duration	$ 2,684
Commercial Real Estate Portfolio Segment [Member]
Financing Receivable, Impaired [Line Items]
Financing Receivable, Number of Contracts, Duration	1
Financing Receivable, Modifications, Pre-Modification Recorded Investment, Duration	$ 2,684