Accumulated Other Comprehensive Loss (Changes in AOCI) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	$ (3,362)	$ (6,829)
Other Comprehensive Loss Before Reclassifications	(16,363)	(60)
Amounts Reclassified from Accumulated Other Comprehensive Loss	5,349	3,527
Net Current Period Other Comprehensive Income (Loss)	(11,014)	3,467
Balance	(14,376)	(3,362)
Interest Rate Protection Agreements
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	(3,481)	(7,008)
Other Comprehensive Loss Before Reclassifications	(16,270)	0
Amounts Reclassified from Accumulated Other Comprehensive Loss	5,349	3,527
Net Current Period Other Comprehensive Income (Loss)	(10,921)	3,527
Balance	(14,402)	(3,481)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	119	179
Other Comprehensive Loss Before Reclassifications	(93)	(60)
Amounts Reclassified from Accumulated Other Comprehensive Loss	0	0
Net Current Period Other Comprehensive Income (Loss)	(93)	(60)
Balance	$ 26	$ 119