Fair Value (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Impaired Loans - Covered
Impaired loans - covered	$ 12,234
Valuation technique	Appraised value
Significant unobservable inputs	Discounts to reflect current market conditions, ultimate collectability, and estimated costs to sell
General range of significant input values, minimum	0.00%
General range of significant input values, maximum	49.00%
Impaired Loans - Non - Covered
Impaired loans - non-covered	21,021
Valuation technique	Appraised value
Significant unobservable inputs	Discounts to reflect current market conditions, ultimate collectability, and estimated costs to sell
General range of significant input values, minimum	0.00%
General range of significant input values, maximum	21.00%
Foreclosed Real Estate - Covered
Other real estate - covered	47,290
Valuation technique	Appraised value
Significant unobservable inputs	Discounts to reflect current market conditions, ultimate collectability, and estimated costs to sell
General range of significant input values, minimum	0.00%
General range of significant input values, maximum	29.00%
Foreclosed Real Estate - Non-Covered
Other real estate - non-covered	$ 26,285
Valuation technique	Appraised value
Significant unobservable inputs	Discounts to reflect current market conditions, ultimate collectability, and estimated costs to sell
General range of significant input values, minimum	0.00%
General range of significant input values, maximum	40.00%