Stock Compensation Plans - Common Stock Shares Issued to Non-Employee Directors as Compensation (Detail) - Non Employee Directors - USD ($)	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares of common stock issued	14,509	24,947	40,910
Fair value of common stock issued	$ 68,456	$ 127,734	$ 213,749