Fair Value Measurements (Restated) - Schedule of Floating-to-Fixed Interest Rate Swap (Detail) (USD $) In Thousands, unless otherwise specified	1 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Aug. 31, 2013	Sep. 30, 2012	Sep. 30, 2012	Sep. 30, 2013 Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] Interest Rate Swaps [Member]	Sep. 30, 2013 Reclassification out of Accumulated Other Comprehensive Income (Loss) [Member] Interest Rate Swaps [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Reclassified from accumulated other comprehensive loss to interest expense		$ (10,268)	$ (29,203)	$ (1,082)	$ (1,948)
Change in fair value credited to interest expense	231			(231)	785
Estimated amount of accumulated other comprehensive loss to be reclassified to interest expense within the next twelve months				$ (1,424)	$ (1,424)