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Disclosures About Fair Value Measurements (Assets Measured at Fair Value on Non-Recurring Basis) (Details) (USD $)
In Thousands, unless otherwise specified
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Carrying value of impaired loans $ 2,318 $ 4,806
Level 3 [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Valuation Techniques Appraisal of collateral [1],[2] Appraisal of collateral [1],[2]
Level 3 [Member] | Minimum [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liquidation Expense 1.00% [3] 1.00% [3]
Estimated Liquidation Expense 1.00% [3] 1.00% [3]
Appraisal of Adjustment 0.00% [3] 0.00% [3]
Level 3 [Member] | Maximum [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Liquidation Expense 15.00% [3] 15.00% [3]
Estimated Liquidation Expense 20.00% [3] 20.00% [3]
Appraisal of Adjustment 35.00% [3] 35.00% [3]
Fair Value Measurements, Nonrecurring Basis [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other real estate owned 866 1,228
Carrying value of impaired loans 1,513 3,220
Fair Value Measurements, Nonrecurring Basis [Member] | Level 1 [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other real estate owned      
Carrying value of impaired loans      
Fair Value Measurements, Nonrecurring Basis [Member] | Level 2 [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other real estate owned      
Carrying value of impaired loans      
Fair Value Measurements, Nonrecurring Basis [Member] | Level 3 [Member]
    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Other real estate owned 866 1,228
Carrying value of impaired loans $ 1,513 $ 3,220
[1] Fair Value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.
[2] Includes qualitative adjustments by management and estimated liquidation expenses.
[3] Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses.