Fair Value Presentation (Schedule of Level III Inputs to Determine Fair Value) (Details) - Impaired Loans [Member] - USD ($)
$ in Thousands

6 Months Ended

12 Months Ended

Jun. 30, 2018

Dec. 31, 2017

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Total Fair Value, non-recurring

$ 2,086

$ 1,812

Valuation Techniques

^[1]

Appraisal of collateral

Appraisal of collateral

Unobservable inputs - Appraisal adjustments

(20.00%)

(20.00%)

Unobservable inputs - Liquidation expenses

(10.00%)

(10.00%)

Weighted Average [Member]

Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]

Unobservable inputs - Appraisal adjustments

(20.00%)

(20.00%)

Unobservable inputs - Liquidation expenses

(10.00%)

(10.00%)

[1] Fair value is generally determined through independent appraisals of the underlying collateral, which generally include various level III inputs which are not identifiable.