Derivatives and Hedging Activities (Derivative Instruments, Gain (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in accumulated other comprehensive loss from interest rate derivatives (effective portion)	$ (48)	$ 134	$ (366)	$ (142)
Amount of (loss) gain recognized in income on derivative (ineffective portion, reclassifications of missed forecasted transactions and amounts excluded from effectiveness testing)			(3)	(1)
Interest rate swap [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of (loss) gain recognized in accumulated other comprehensive loss from interest rate derivatives (effective portion)	(149)	10	(570)	(389)
Amount of (loss) gain recognized in income on derivative (ineffective portion, reclassifications of missed forecasted transactions and amounts excluded from effectiveness testing)	0	1	(3)	(1)
Interest rate swap [Member] | Interest Expense [Member] | Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of loss reclassified from accumulated other comprehensive loss into income as interest expense (effective portion)	$ (101)	$ (124)	$ (204)	$ (247)