Share Repurchases - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014	Jan. 31, 2015
Equity, Class of Treasury Stock [Line Items]
Common stock share repurchased	2,625	10,588	2,625	251,910
Common stock share purchase price	$ 200	$ 900	$ 200	$ 16,600
Unpaid principal amount of notes payable for share repurchases	19,523		19,523		$ 19,285
Interest expense related to notes payable for share repurchases	$ 300	$ 200	$ 500	$ 400
Promissory Notes [Member]
Equity, Class of Treasury Stock [Line Items]
Debt instrument, stated interest percentage	3.00%	5.00%	3.00%	5.00%
Debt instrument, term	7 years	8 years	7 years	8 years