Fair Value Measurements, Quantitative Information About Unobservable Inputs Used In Recurring And Nonrecurring Level 3 Inputs (Details) - Nonrecurring [Member] - Impaired loans [Member] - Level 3 [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value	$ 1,932	$ 5,340
High [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	8.25%	8.25%
Low [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	3.25%	4.50%
Weighted Average [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Discount rate	6.25%	5.56%