Accumulated Other Comprehensive Loss (Changes in AOCI) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	$ (3,362)
Other Comprehensive Loss Before Reclassifications	(6,314)
Amounts Reclassified from Accumulated Other Comprehensive Loss	2,908
Net Current Period Other Comprehensive Loss	(3,406)
Balance as of June 30, 2014	(6,768)
Interest Rate Protection Agreements
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	(3,481)
Other Comprehensive Loss Before Reclassifications	(6,309)
Amounts Reclassified from Accumulated Other Comprehensive Loss	2,908
Net Current Period Other Comprehensive Loss	(3,401)
Balance as of June 30, 2014	(6,882)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance as of December 31, 2013	119
Other Comprehensive Loss Before Reclassifications	(5)
Amounts Reclassified from Accumulated Other Comprehensive Loss	0
Net Current Period Other Comprehensive Loss	(5)
Balance as of June 30, 2014	$ 114