Fair Value Measurements (Details 2) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	$ 30,104
Other real estate owned	32,834
Total	62,938
Market comparables [Member] | Discount applied to market comparables [Member] | Other real estate owned [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	33.00%
Commercial Construction [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	3,190
Commercial Construction [Member] | Market comparables [Member] | Discount applied to market comparables [Member] | Impaired loans [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	6.00%
Commercial Real Estate - Owner Occupied [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	2,001
Commercial Real Estate - Owner Occupied [Member] | Market comparables [Member] | Discount applied to market comparables [Member] | Impaired loans [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	13.00%
Commercial Real Estate - Non-Owner Occupied [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	13,100
Commercial Real Estate - Non-Owner Occupied [Member] | Market comparables [Member] | Discount applied to market comparables [Member] | Impaired loans [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	9.00%
Raw Land and Lots [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	7,300
Raw Land and Lots [Member] | Market comparables [Member] | Discount applied to market comparables [Member] | Impaired loans [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	6.00%
Single Family Investment Real Estate [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	1,241
Single Family Investment Real Estate [Member] | Market comparables [Member] | Discount applied to market comparables [Member] | Impaired loans [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	6.00%
Commercial and Industrial [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	1,810
Commercial and Industrial [Member] | Market comparables [Member] | Discount applied to market comparables [Member] | Impaired loans [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	23.00%
Other Consumer [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Impaired loans	$ 1,462
Other Consumer [Member] | Market comparables [Member] | Discount applied to market comparables [Member] | Impaired loans [Member]
Summary of quantitative information about Level 3 Fair Value Measurements
Weighted Average	27.00%