Summary of Stock Option Activity (Parenthetical) (Detail)	3 Months Ended
	May 04, 2019 $ / shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Options exercised, exercise price	$ 14.59	[1]

[1] Options exercised during the 13 weeks ended May 4, 2019 had an exercise price of $14.59.