Loans (Troubled Debt Restructurings Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended			9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Dec. 31, 2012	Sep. 30, 2013 Troubled Debt Restructuring (TDR) [Member]	Dec. 31, 2012 Troubled Debt Restructuring (TDR) [Member]
Financing Receivable, Impaired [Line Items]
Impaired Financing Receivable, Average Recorded Investment	$ 22,905,000	$ 37,251,000	$ 26,299,000	$ 39,381,000		$ 9,500,000	$ 14,700,000
Impaired Financing Receivable, Related Allowance	1,447,000		1,447,000		2,001,000	379,000	659,000
Loans in nonaccrual status						$ 1,800,000	$ 1,100,000