Fair Value Measurements (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans	$ 7,433	$ 20,178
OREO	28,862	33,761
Total	36,295	53,939
Quoted Prices In Active Markets for Identical Assets (Level 1) [Member]
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans	0	0
OREO	0	0
Total	0	0
Significant Other Observable Inputs (Level 2) [Member]
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans	0	0
OREO	0	0
Total	0	0
Significant Unobservable Inputs (Level 3) [Member]
Impaired loans measured at fair value on a nonrecurring basis
Impaired loans		20,178
OREO		33,761
Total	$ 36,295	$ 53,939