Accumulated Other Comprehensive Loss - Changes in AOCI (Detail) $ in Thousands	6 Months Ended
	Jun. 30, 2015 USD ($)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	$ (13,867)
Other Comprehensive (Loss) Income Before Reclassifications	(9,142)
Amounts Reclassified from Accumulated Other Comprehensive Loss	15,373
Net Current Period Other Comprehensive Income (Loss)	6,231
Balance	(7,636)
Interest Rate Protection Agreements
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	(14,402)
Other Comprehensive (Loss) Income Before Reclassifications	(8,909)
Amounts Reclassified from Accumulated Other Comprehensive Loss	15,373
Net Current Period Other Comprehensive Income (Loss)	6,464
Balance	(7,938)
Foreign Currency Translation Adjustment
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	(15)
Other Comprehensive (Loss) Income Before Reclassifications	15
Amounts Reclassified from Accumulated Other Comprehensive Loss	0
Net Current Period Other Comprehensive Income (Loss)	15
Balance	0
Comprehensive Income (Loss) Attributable to Noncontrolling Interest
Accumulated Other Comprehensive Income (Loss), Net of Tax
Balance	550
Other Comprehensive (Loss) Income Before Reclassifications	(248)
Amounts Reclassified from Accumulated Other Comprehensive Loss	0
Net Current Period Other Comprehensive Income (Loss)	(248)
Balance	$ 302