Disclosures About Fair Value of Financial Instruments (Details 5) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Debt securities
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value	$ 12,251
Debt securities | Discounted cash flow
Quantitative information for Level 3 Fair Value Measurements Assets
Default rates (as a percent)	1.00%
Prepayment speeds (as a percent)	1.00%
Debt securities | Discounted cash flow | Minimum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin (as a percent)	0.35%
Debt securities | Discounted cash flow | Maximum
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin (as a percent)	2.10%
Debt securities | Discounted cash flow | Weighted Average
Quantitative information for Level 3 Fair Value Measurements Assets
Discount margin (as a percent)	0.69%
Loan measured for impairment
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value	62,730
Estimated costs to sell (as a percent)	10.00%
Real estate owned
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value	$ 18,203
Estimated costs to sell (as a percent)	10.00%