Net Income (Loss) Per Share - Anti-Dilutive Securities Excluded from Diluted Net Income (Loss) per Share (Detail) - shares	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options and restricted stock units were excluded from calculation of diluted net earnings share	8,510,247	610,151	9,965,459	355,329
Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options and restricted stock units were excluded from calculation of diluted net earnings share	7,498,345	607,427	8,782,871	353,967
Restricted Stock [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Options and restricted stock units were excluded from calculation of diluted net earnings share	1,011,902	2,724	1,182,588	1,362