Fair Value Measurements (Details 1) (USD $) In Thousands	Sep. 30, 2011	Dec. 31, 2010
Level of valuation assumptions to determine the carrying value of assets measured at fair value on a non-recurring basis
Impaired loans	$ 56,865	$ 14,710
Foreclosed real estate	40,976	45,693
Quoted Prices in Active Markets for Identical Assets (Level 1) [Member]
Level of valuation assumptions to determine the carrying value of assets measured at fair value on a non-recurring basis
Impaired loans	0	0
Foreclosed real estate	0	0
Significant Other Observable Inputs (Level 2) [Member]
Level of valuation assumptions to determine the carrying value of assets measured at fair value on a non-recurring basis
Impaired loans	0	0
Foreclosed real estate	0	0
Significant Unobservable Inputs (Level 3) [Member]
Level of valuation assumptions to determine the carrying value of assets measured at fair value on a non-recurring basis
Impaired loans	61,759	16,721
Foreclosed real estate	40,976	45,693
Total Gains (Losses) [Member]
Level of valuation assumptions to determine the carrying value of assets measured at fair value on a non-recurring basis
Impaired loans	(1,820)	0
Foreclosed real estate	$ (4,909)	$ (2,739)