Derivative Instruments And Hedging Activities (Narrative) (Details) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2013 USD ($) contract	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2014 USD ($)	Dec. 31, 2014 USD ($)
Line of Credit Facility [Line Items]
Number of interest rate swap contracts | contract	2
Notional amount of interest rate swap		$ 13,600		$ 13,600
Swap option, termination date				Jun. 30, 2020
Gain (loss) on cash flow hedge ineffectiveness		0	$ 0	$ 0	$ 0
$25 Million Term Loan [Member]
Line of Credit Facility [Line Items]
Percentage of debt converted to fixed-rate debt	80.00%
Maximum borrowing capacity	$ 25,000	$ 25,000		$ 25,000		$ 25,000
Fixed interest rate	3.73%	3.73%		3.73%
Notional amount of interest rate swap		$ 13,600		$ 13,600