CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2016	May. 02, 2015
Statement Of Income And Comprehensive Income [Abstract]
Net income	$ 40,476	$ 29,055
Other comprehensive income (loss):
Foreign currency translation income (loss)	5,384	(1,100)
Other comprehensive income (loss):	5,384	(1,100)
Comprehensive income	$ 45,860	$ 27,955