Fair Value Measurements (Unobservable Inputs Used in Level 3 Fair Value Measurements) (Details) - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Loans With Impairment [Member]
Assets, Fair Value Disclosure	$ 2,541	$ 3,202
Other Real Estate Owned [Member]
Assets, Fair Value Disclosure	8,305	$ 9,341
Premises and Equipment Held for Sale [Member]
Assets, Fair Value Disclosure	$ 600
Maximum [Member] | Loans With Impairment [Member]
Fair Value Inputs, Discount Rate	50.00%	50.00%
Maximum [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Discount Rate	50.00%	50.00%
Maximum [Member] | Premises and Equipment Held for Sale [Member]
Fair Value Inputs, Discount Rate	40.00%
Minimum [Member] | Loans With Impairment [Member]
Fair Value Inputs, Discount Rate	0.00%	0.00%
Minimum [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Discount Rate	0.00%	0.00%
Minimum [Member] | Premises and Equipment Held for Sale [Member]
Fair Value Inputs, Discount Rate	0.00%
Weighted Average [Member] | Loans With Impairment [Member]
Fair Value Inputs, Discount Rate	35.00%	24.00%
Weighted Average [Member] | Other Real Estate Owned [Member]
Fair Value Inputs, Discount Rate	12.00%	12.00%
Weighted Average [Member] | Premises and Equipment Held for Sale [Member]
Fair Value Inputs, Discount Rate	38.00%