Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 91,103	$ 91,002	$ 18,195
Net losses from foreign currency translation	(2,164)	(1,143)	(582)
Net unrealized holding gains (losses) on available-for-sale investments	(34)	12
Total comprehensive income	$ 88,905	$ 89,871	$ 17,613