Financial Instruments with Off-Balance Sheet Risk (Schedule of Commitments Outstanding) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments outstanding	$ 228,606	$ 186,257
Commitments to Extend Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments outstanding	220,271	178,233
Unused lines of Credit [Member]
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments outstanding	$ 8,335	$ 8,024