Significant Accounting Policies - Summary of RHCA liability for lease loss (Detail) - USD ($) $ in Thousands	12 Months Ended
	Feb. 02, 2019	Feb. 03, 2018
Accounting Policies [Abstract]
Balance at beginning of fiscal year	$ 7,100	$ 3,188
Lease loss liability remeasurement	3,411	4,417
Payments made under lease agreement	(2,249)	(1,699)
Payments received under sublease agreement	(1,138)	(1,003)
Interest	415	191
Balance at end of fiscal year	$ 9,815	$ 7,100