Fair Value Measurements (Schedule of Fair Value Disclosures Measured On Nonrecurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Fair Value [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	$ 17,015	$ 9,683
Private Equity Investments Nonrecurring Basis	1,309	675
Mortgage servicing rights	777	628
Foreclosed assets	850	1,115
Long-lived assets	8,528	0
Fair Value, Inputs, Level 1 [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	0	0
Private Equity Investments Nonrecurring Basis	0	0
Mortgage servicing rights	0	0
Foreclosed assets	0	0
Long-lived assets	0	0
Significant Other Observable Inputs (Level 2) [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	0	0
Private Equity Investments Nonrecurring Basis	0	0
Mortgage servicing rights	0	0
Foreclosed assets	0	0
Long-lived assets	0	0
Significant Unobservable Inputs (Level 3) [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	17,015	9,683
Private Equity Investments Nonrecurring Basis	1,309	675
Mortgage servicing rights	777	628
Foreclosed assets	850	1,115
Long-lived assets	8,528	0
Total Gains (Losses) Recognized During The Period [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Loans Nonrecurring Basis Gains Losses	(2,797)	(3,132)
Private Equity Investments Nonrecurring Basis Gains Losses	(1,191)	(325)
Mortgage Servicing Rights Nonrecurring Basis Gains Losses	13	227
Foreclosed Assets Nonrecurring Basis Gains Losses	(275)	(168)
Long Lived Assets Nonrecurring Basis Gains Losses	$ (1,890)	$ 0