Derivatives - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended		6 Months Ended
	Aug. 01, 2014	Jan. 29, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative [Line Items]
Reclassification of fair value of interest rate protection agreements			$ 0	$ 0	$ (12,990)	$ 0
Mark-to-Market and Settlement Gain (Loss) on Interest Rate Protection Agreements			$ 1,444	$ 0	(11,546)	$ 0
Group I Swaps
Derivative [Line Items]
Swaps, number of instruments held		4
Swaps, notional amount		$ 200,000
Swaps, variable rate		one month LIBOR
Swaps, weighted average fixed rate		2.29%
Group II Swaps
Derivative [Line Items]
Swaps, number of instruments held	3
Swaps, notional amount	$ 220,000
Swaps, variable rate	three month LIBOR
Swaps, weighted average fixed rate	2.5795%
Reclassification of fair value of interest rate protection agreements					12,990
Settlement payment on Group II Swaps					$ 11,546