Components of Interest Expense (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Interest related to sale of tax benefits	$ 1,837	$ 1,710
Loss on interest rate lock transactions		733	[1]
Other	16,468	12,918
Less - amount capitalized	(3,427)	(2,281)
Interest expense, net	$ 14,878	$ 13,080

[1] The interest rate lock transactions are related to the OFC 2 Senior Secured Notes and were not accounted for using hedge accounting.