Components of Interest Expense, Net (Detail) (USD $) In Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Parent		$ 130		$ 310
Interest related to sale of tax benefits	2,166	1,353	3,876	2,728
Loss on interest rate lock transactions	4,002		4,735
Other	14,180	10,165	27,098	19,938
Less - amount capitalized	(2,906)	(2,222)	(5,187)	(3,836)
Interest expense, net	$ 17,442	$ 9,426	$ 30,522	$ 19,140