Fair Value (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Impaired loans permanent real estate loans [Member]
Fair value measurements for financial instruments
Fair Value	6,166
Impaired loans permanent real estate loans [Member] | Sales comparison approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Sales comparison approach
Impaired loans permanent real estate loans [Member] | Sales comparison approach [Member] | Maximum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	45.44%
Impaired loans permanent real estate loans [Member] | Sales comparison approach [Member] | Minimum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	12.07%
Impaired loans permanent real estate loans [Member] | Sales comparison approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	28.75%
Impaired loans permanent real estate loans [Member] | Income approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Income approach
Impaired loans permanent real estate loans [Member] | Income approach [Member] | Maximum [Member]
Fair value measurements for financial instruments
Adjustment for net operating income differences in Capitalization rate	10.73%
Impaired loans permanent real estate loans [Member] | Income approach [Member] | Minimum [Member]
Fair value measurements for financial instruments
Adjustment for net operating income differences in Capitalization rate	7.52%
Impaired loans permanent real estate loans [Member] | Income approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for net operating income differences in Capitalization rate	9.49%
Impaired loans construction [Member]
Fair value measurements for financial instruments
Fair Value	3,489
Impaired loans construction [Member] | Sales comparison approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Sales comparison approach
Impaired loans construction [Member] | Sales comparison approach [Member] | Maximum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	25.00%
Impaired loans construction [Member] | Sales comparison approach [Member] | Minimum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	0.00%
Impaired loans construction [Member] | Sales comparison approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	9.83%
Impaired loans construction [Member] | Income approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Income approach
Impaired loans construction [Member] | Income approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for net operating income differences in Capitalization rate	10.00%
Foreclosed assets permanent real estate loans [Member]
Fair value measurements for financial instruments
Fair Value	3,172
Foreclosed assets permanent real estate loans [Member] | Sales comparison approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Sales comparison approach
Foreclosed assets permanent real estate loans [Member] | Sales comparison approach [Member] | Maximum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	16.47%
Foreclosed assets permanent real estate loans [Member] | Sales comparison approach [Member] | Minimum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	3.60%
Foreclosed assets permanent real estate loans [Member] | Sales comparison approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	10.20%
Foreclosed construction loans [Member]
Fair value measurements for financial instruments
Fair Value	6,918
Foreclosed construction loans [Member] | Sales comparison approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Sales comparison approach
Foreclosed construction loans [Member] | Sales comparison approach [Member] | Maximum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	47.24%
Foreclosed construction loans [Member] | Sales comparison approach [Member] | Minimum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	0.00%
Foreclosed construction loans [Member] | Sales comparison approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	17.63%
Commercial Loans [Member]
Fair value measurements for financial instruments
Fair Value	257
Commercial Loans [Member] | Sales comparison approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Sales comparison approach
Commercial Loans [Member] | Sales comparison approach [Member] | Maximum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	24.18%
Commercial Loans [Member] | Sales comparison approach [Member] | Minimum [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	1.60%
Commercial Loans [Member] | Sales comparison approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for differences between comparable sales	11.15%
Commercial Loans [Member] | Income approach [Member]
Fair value measurements for financial instruments
Valuation Technique	Income approach
Commercial Loans [Member] | Income approach [Member] | Maximum [Member]
Fair value measurements for financial instruments
Adjustment for net operating income differences in Capitalization rate	10.00%
Commercial Loans [Member] | Income approach [Member] | Minimum [Member]
Fair value measurements for financial instruments
Adjustment for net operating income differences in Capitalization rate	8.50%
Commercial Loans [Member] | Income approach [Member] | Weighted Average [Member]
Fair value measurements for financial instruments
Adjustment for net operating income differences in Capitalization rate	9.25%