Fair Value Measurements (Schedule of Fair Value Disclosures Measured On Nonrecurring Basis) (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Fair Value [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Collateral Dependent Impaired Loans	$ 3,897	$ 10,603
Private Equity Investments Nonrecurring Basis	0	1,309
Mortgage servicing rights	1,242	793
Foreclosed assets	608	1,191
Long-lived assets	2,425	7,246
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	3,897	10,603
Private Equity Investments Nonrecurring Basis	0	1,309
Mortgage servicing rights	1,242	793
Foreclosed assets	608	1,191
Long-lived assets	2,425	7,246
Total Gains (Losses) Recognized During The Period [Member]
Fair Value, Concentration of Risk, Financial Statement Captions [Line Items]
Loans Nonrecurring Basis Gains Losses	(1,340)	(3,124)
Private Equity Investments Nonrecurring Basis Gains Losses	0	(1,191)
Mortgage Servicing Rights Nonrecurring Basis Gains Losses	53	1
Foreclosed Assets Nonrecurring Basis Gains Losses	(162)	(319)
Long Lived Assets Nonrecurring Basis Gains Losses	$ (1,667)	$ (1,408)