Fair Value Measurements (Quantitative Information for Assets Measured at Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended		12 Months Ended
	Mar. 31, 2013	Jun. 30, 2013		Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans		$ 9,293		$ 7,662
Other real estate owned		117		428
Impaired loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Measurements, Valuation Techniques		Appraisal of collateral (1)	[1]	Appraisal of collateral (1)	[1]
Fair Value Measurements, Unobservable Inputs		Appraisal and liquidation adjustments (2)	[2]	Appraisal and liquidation adjustments (2)	[2]
Fair Value Weighted Average Volatility Rate		(9.00%)		(8.10%)
Other real estate owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Measurements, Valuation Techniques		Appraisal of collateral (1)	[1]	Appraisal of collateral (1)	[1]
Fair Value Measurements, Unobservable Inputs		Appraisal and liquidation adjustments (2)	[2]	Appraisal and liquidation adjustments (2)	[2]
Fair Value Inputs, Discount Rate	300.00%			0.00%
Fair Value Weighted Average Volatility Rate		0.00%		0.00%
Mortgage Servicing Rights [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Measurements, Valuation Techniques		Multiple of annual servicing fee		Multiple of annual servicing fee
Fair Value Measurements, Unobservable Inputs		Estimated pre-payment speed, based on rate and term		Estimated pre-payment speed, based on rate and term
Fair Value Weighted Average Volatility Rate		326.00%		326.00%
Minimum [Member] | Impaired loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate		(10.00%)		(10.00%)
Minimum [Member] | Other real estate owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate		0.00%
Maximum [Member] | Impaired loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate		(7.00%)		7.00%
(Level 3) Significant Other Unobservable Inputs [Member] | Impaired loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans		3,723		2,056
(Level 3) Significant Other Unobservable Inputs [Member] | Other real estate owned [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Other real estate owned		50		50
(Level 3) Significant Other Unobservable Inputs [Member] | Mortgage Servicing Rights [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage Servicing Rights		$ 139		$ 98
(Level 3) Significant Other Unobservable Inputs [Member] | Minimum [Member] | Mortgage Servicing Rights [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate				300.00%
(Level 3) Significant Other Unobservable Inputs [Member] | Maximum [Member] | Mortgage Servicing Rights [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value Inputs, Discount Rate				400.00%

[1] Fair value is generally determined through independent appraisals of the underlying collateral that generally include various level 3 inputs which are not identifiable.

[2] Appraisals may be adjusted by management for qualitative factors such as economic conditions and estimated liquidation expenses. The range of liquidation expenses and other appraisal adjustments are presented as a percent of the appraisal.