Loans and Allowance for Loan Losses - Troubled Debt Restructuring Loan Information (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2013 Commercial contracts	Jun. 30, 2013 Commercial contracts	Jun. 30, 2013 Residential real estate contracts	Jun. 30, 2013 Residential real estate contracts	Jun. 30, 2013 Home equity loans contracts	Jun. 30, 2013 Home equity loans contracts	Jun. 30, 2013 Indirect contracts	Jun. 30, 2013 Indirect contracts	Jun. 30, 2012 Commercial real estate contracts	Jun. 30, 2012 Commercial real estate contracts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans	4	4	1	2	8	16	19	32	0	5
Recorded Investment - Pre-Modification Outstanding	$ 110	$ 110	$ 109	$ 143	$ 325	$ 686	$ 188	$ 349	$ 0	$ 2,972
Recorded Investment - Post-Modification Outstanding	104	104	109	132	233	476	173	272	0
Recorded Investment	$ 104	$ 104	$ 109	$ 132	$ 233	$ 476	$ 173	$ 272	$ 0	$ 2,972