Fair Value Measurements - Summary of Activity Recorded for Derivatives Using Level 3 Inputs (Detail) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Aug. 01, 2015	May. 02, 2015	Aug. 02, 2014	May. 03, 2014	Aug. 01, 2015	Aug. 02, 2014
Derivative Liability [Roll Forward]
Beginning balance as of beginning of period	$ 19,367	$ 28,448	$ 29,495	$ 30,720	$ 28,448	$ 30,720
Loss (Gain) on change in fair value	(15,717)	(9,081)	(10,434)	(1,225)	(24,798)	(11,659)
Ending balance as of end of period	$ 3,650	$ 19,367	$ 19,061	$ 29,495	$ 3,650	$ 19,061