Income Taxes - Schedule of Reconciliation of Unrecognized Tax Benefits (Detail) - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Income Tax Disclosure [Abstract]
Balance at beginning of fiscal year	$ 921	$ 940	$ 1,395
Gross increases (decreases)—prior period tax positions	53	(88)	(122)
Gross increases—current period tax positions	1,216	69
Lapses in statute of limitations			(333)
Balance at end of fiscal year	$ 2,190	$ 921	$ 940