Fair Value of Assets and Liabilities Fair Value of Assets and Liabilities (Details 2) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral-dependent impaired loans, net of ALLL	$ 19,039
Cost Approach [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral-dependent impaired loans, net of ALLL	928
Cost Approach [Member] | Selling Costs [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	0.00%
Maximum Rate on Unobservable Inputs	20.00%
Weighted Average Rate on Unobservable Inputs	4.40%
Income Approach [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral-dependent impaired loans, net of ALLL	5,182
Income Approach [Member] | Selling Costs [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	8.00%
Maximum Rate on Unobservable Inputs	8.00%
Weighted Average Rate on Unobservable Inputs	8.00%
Income Approach [Member] | Discount Rate [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	6.00%
Maximum Rate on Unobservable Inputs	8.30%
Weighted Average Rate on Unobservable Inputs	7.20%
Sales Comparison Approach [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Other real estate owned	5,459
Collateral-dependent impaired loans, net of ALLL	8,515
Sales Comparison Approach [Member] | Selling Costs [Member] | Other real estate owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	6.50%
Maximum Rate on Unobservable Inputs	10.00%
Weighted Average Rate on Unobservable Inputs	7.30%
Sales Comparison Approach [Member] | Selling Costs [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	0.00%
Maximum Rate on Unobservable Inputs	10.00%
Weighted Average Rate on Unobservable Inputs	7.90%
Sales Comparison Approach [Member] | Discount Rate [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	0.00%
Maximum Rate on Unobservable Inputs	5.00%
Weighted Average Rate on Unobservable Inputs	2.50%
Sales Comparison Approach [Member] | Adjustment to Comparables [Member] | Other real estate owned [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	0.00%
Maximum Rate on Unobservable Inputs	10.00%
Weighted Average Rate on Unobservable Inputs	0.10%
Sales Comparison Approach [Member] | Adjustment to Comparables [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	0.00%
Maximum Rate on Unobservable Inputs	5.00%
Weighted Average Rate on Unobservable Inputs	0.20%
Combined Approach [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Collateral-dependent impaired loans, net of ALLL	$ 4,414
Combined Approach [Member] | Selling Costs [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	8.00%
Maximum Rate on Unobservable Inputs	10.00%
Weighted Average Rate on Unobservable Inputs	8.70%
Combined Approach [Member] | Discount Rate [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	7.50%
Maximum Rate on Unobservable Inputs	7.50%
Weighted Average Rate on Unobservable Inputs	7.50%
Combined Approach [Member] | Adjustment to Comparables [Member] | Collateral-dependent Impaired Loans, Net of ALLL [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Minimum Rate on Unobservable Inputs	0.00%
Maximum Rate on Unobservable Inputs	36.00%
Weighted Average Rate on Unobservable Inputs	17.40%