Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Jan. 28, 2017	Jan. 30, 2016	Jan. 31, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (162,659)	$ 5,099	$ 35,723
Comprehensive (loss) income	$ (162,659)	$ 5,099	$ 35,723