Accumulated Other Comprehensive Income (Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense, net	$ 8,665	$ 10,614
Reclassification Out Of Accumulated Other Comprehensive Income (Loss) [Member] | Unrealized (Loss) Income On Derivative Instruments [Member] | Interest Rate Swaps [Member]
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest expense, net	$ 669	$ 1,777