Loans and Allowance for Loan Losses - Troubled Debt Restructuring Loan Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2013 Commercial contracts	Sep. 30, 2013 Commercial contracts	Sep. 30, 2013 Residential real estate contracts	Sep. 30, 2013 Residential real estate contracts	Sep. 30, 2013 Home equity loans contracts	Sep. 30, 2013 Home equity loans contracts	Sep. 30, 2013 Indirect contracts	Sep. 30, 2013 Indirect contracts	Sep. 30, 2013 Consumer Loans contracts	Sep. 30, 2013 Consumer Loans contracts	Sep. 30, 2012 Commercial real estate contracts	Sep. 30, 2012 Commercial real estate contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans	0	4	1	3	5	21	3	35	2	2	0	4
Recorded Investment - Pre-Modification Outstanding	$ 0	$ 110	$ 46	$ 189	$ 320	$ 1,006	$ 31	$ 380	$ 27	$ 27	$ 0	$ 2,861
Recorded Investment - Post-Modification Outstanding	0	104	42	174	277	753	31	303	27	27	0
Recorded Investment	$ 0	$ 104	$ 42	$ 174	$ 277	$ 753	$ 31	$ 303	$ 27	$ 27	$ 0	$ 2,861