Fair Value of Financial Assets and Liabilities, Quantitative Information about Level 3 Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Mortgage Servicing Rights [Member] | Minimum [Member]
Fair Value Inputs [Abstract]
Constant prepayment rate (in hundredths)	4.60%	4.30%
Probability of default (in hundredths)	0.00%	0.00%
Discount rate (in hundredths)	9.94%
Mortgage Servicing Rights [Member] | Maximum [Member]
Fair Value Inputs [Abstract]
Constant prepayment rate (in hundredths)	24.40%	23.60%
Probability of default (in hundredths)	100.00%	33.33%
Discount rate (in hundredths)	11.50%
Mortgage Servicing Rights [Member] | Weighted Average [Member]
Fair Value Inputs [Abstract]
Constant prepayment rate (in hundredths)	10.50%	9.70%
Probability of default (in hundredths)	3.54%	3.36%
Discount rate (in hundredths)	10.13%	10.00%
Mortgage Servicing Rights [Member] | Income Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 3,112	$ 3,424
Impaired Loans (Collateral Dependent) [Member] | Minimum [Member]
Fair Value Inputs [Abstract]
Marketability discount (in hundredths)	5.00%	5.00%
Impaired Loans (Collateral Dependent) [Member] | Maximum [Member]
Fair Value Inputs [Abstract]
Marketability discount (in hundredths)	10.00%	10.00%
Impaired Loans (Collateral Dependent) [Member] | Weighted Average [Member]
Fair Value Inputs [Abstract]
Marketability discount (in hundredths)	7.00%	7.00%
Impaired Loans (Collateral Dependent) [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	7,375	6,830
Other Real Estate/Asset Owned [Member] | Minimum [Member]
Fair Value Inputs [Abstract]
Comparability adjustments (in hundredths)	3.00%	5.00%
Other Real Estate/Asset Owned [Member] | Maximum [Member]
Fair Value Inputs [Abstract]
Comparability adjustments (in hundredths)	67.00%	38.00%
Other Real Estate/Asset Owned [Member] | Weighted Average [Member]
Fair Value Inputs [Abstract]
Comparability adjustments (in hundredths)	17.10%	9.00%
Other Real Estate/Asset Owned [Member] | Market Approach Valuation Technique [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 6,316	$ 11,111