Summary of Significant Accounting Policies - Summary of Basic EPS and Diluted EPS Calculations (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								4 Months Ended	12 Months Ended
	Jan. 28, 2017	Oct. 29, 2016	Jul. 30, 2016	Apr. 30, 2016	Jan. 30, 2016	Oct. 31, 2015	Aug. 01, 2015	May 02, 2015	Jan. 31, 2015	Jan. 28, 2017	Jan. 30, 2016	Sep. 30, 2014
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Net income (loss)	$ (32,786)	$ (1,506)	$ (2,509)	$ 4,041	$ (3,062)	$ (1,274)	$ (2,682)	$ 2,535	$ (17,380)	$ (32,760)	$ (4,483)	$ 10,497
Net income (loss) per share—Basic	$ (2.39)	$ (0.11)	$ (0.18)	$ 0.30	$ (0.22)	$ (0.09)	$ (0.20)	$ 0.19	$ (1.28)	$ (2.39)	$ (0.33)	$ 0.78
Net income (loss) per share—Diluted	$ (2.39)	$ (0.11)	$ (0.18)	$ 0.30	$ (0.22)	$ (0.09)	$ (0.20)	$ 0.19	$ (1.28)	$ (2.39)	$ (0.33)	$ 0.77
Average number of shares outstanding—Basic									13,541	13,702	13,596	13,451
Average number of shares outstanding—Diluted									13,541	13,702	13,596	13,572
Employee Stock Option
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Incremental shares from the assumed exercise of outstanding stock options												73
Restricted Stock
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Incremental shares from the assumed lapse of restrictions on restricted stock awards												48