Derivatives and Hedging Activity (Schedule of Interest Rate Derivatives) (Details)	12 Months Ended
	Dec. 31, 2017 USD ($) Contract
Interest Rate Contract June 2015 [Member]
Derivative [Line Items]
Number of Contracts | Contract	1
Beginning Date	Jun. 30, 2015
Maturity Date	Jun. 30, 2018
Rate	1.40%
Total Notional Amount | $	$ 5,000,000
Interest Rate Contract April 2017 [Member]
Derivative [Line Items]
Number of Contracts | Contract	2
Beginning Date	Apr. 13, 2017
Maturity Date	Apr. 30, 2020
Rate	1.81%
Total Notional Amount | $	$ 15,000,000
Interest Rate Contract July 2017 [Member]
Derivative [Line Items]
Number of Contracts | Contract	4
Beginning Date	Jul. 31, 2017
Maturity Date	Jul. 31, 2020
Rate	1.78%
Total Notional Amount | $	$ 17,500,000