Net Income (Loss) Per Share - Schedule of Weighted-Average Shares Used for Net Income (Loss) per Share (Detail) - shares	3 Months Ended		6 Months Ended
	Jul. 29, 2017	Jul. 30, 2016	Jul. 29, 2017	Jul. 30, 2016
Earnings Per Share [Abstract]
Weighted-average shares—basic	28,398,307	40,646,124	35,667,217	40,617,102
Effect of dilutive stock-based awards		174,371
Weighted-average shares—diluted	28,398,307	40,820,495	35,667,217	40,617,102