Fair Value of Assets and Liabilities (Details 2) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Sep. 30, 2014	Dec. 31, 2013
Collateral-dependent impaired loans [Member] | Comparability adjustments (%) [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 2,600	$ 3,540
Fair Value Measurements, Valuation Technique	Market comparable properties	Market comparable properties
Fair Value Measurements, Unobservable Inputs	Comparability adjustments (%)	Comparability adjustments (%)
Mortgage servicing rights [Member] | Discount Rate [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	1,777	2,029
Fair Value Measurements, Valuation Technique	Discounted cash flow	Discounted cash flow
Fair Value Measurements, Unobservable Inputs	Discount Rate	Discount Rate
Fair Value Measurements, Range (Weighted Average)	9.75%	10.25%
Mortgage servicing rights [Member] | Constant prepayment rate [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	Constant prepayment rate	Constant prepayment rate
Fair Value Measurements, Range (Weighted Average)	9.20%	8.50%
Mortgage servicing rights [Member] | P&I earnings credit [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	P&I earnings credit	P&I earnings credit
Fair Value Measurements, Range (Weighted Average)	0.15%	0.17%
Mortgage servicing rights [Member] | T&I earnings credit [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	T&I earnings credit	T&I earnings credit
Fair Value Measurements, Range (Weighted Average)	1.82%	1.54%
Mortgage servicing rights [Member] | Inflation for cost of servicing [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value Measurements, Unobservable Inputs	Inflation for cost of servicing	Inflation for cost of servicing
Fair Value Measurements, Range (Weighted Average)	1.50%	1.50%
Foreclosed assets [Member] | Marketability discount [Member]
Quantitative information about unobservable inputs used in recurring and nonrecurring fair value measurements
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value	$ 145	$ 45
Fair Value Measurements, Valuation Technique	Market comparable properties	Market comparable properties
Fair Value Measurements, Unobservable Inputs	Marketability discount	Marketability discount
Fair Value Measurements, Range (Weighted Average)	10.00%	10.00%