Loans and Allowance for Credit Losses (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013 Contract	Sep. 30, 2012 Contract	Sep. 30, 2013 Contract	Sep. 30, 2012 Contract
Troubled Debt Restructurings [Abstract]
Number of Contracts	3	4	6	16
Pre-Modification Outstanding Recorded Investment	$ 368	$ 1,477	$ 1,657	$ 8,841
Post-Modification Outstanding Recorded Investment	368	892	1,190	7,198
Commercial [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	1	2	2	9
Pre-Modification Outstanding Recorded Investment	142	1,242	874	7,851
Post-Modification Outstanding Recorded Investment	142	651	407	6,204
Real estate - construction [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	0	1	1	3
Pre-Modification Outstanding Recorded Investment	0	135	460	321
Post-Modification Outstanding Recorded Investment	0	124	460	309
Real estate - mortgage [Member]
Troubled Debt Restructurings [Abstract]
Number of Contracts	2	1	3	4
Pre-Modification Outstanding Recorded Investment	226	100	323	669
Post-Modification Outstanding Recorded Investment	$ 226	$ 117	$ 323	$ 685