Net Income (Loss) Per Share - Schedule of Weighted-Average Shares Used for Net Income (Loss) per Share (Detail) - shares	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Earnings Per Share [Abstract]
Weighted-average shares—basic	40,730,059	40,282,734	40,653,091	40,080,843
Effect of dilutive stock-based awards	196,391	2,130,923		2,157,124
Weighted-average shares—diluted	40,926,450	42,413,657	40,653,091	42,237,967