Inventories (Tables)

3 Months Ended

Apr. 30, 2017

Inventory Disclosure [Abstract]

Schedule of inventories

	April 30, 2017		April 30, 2016		January 31, 2017
	(In thousands)
Finished goods	$	445,567	$	405,658	$	483,085
Raw materials and work-in-process		402		1,062		184
	$	445,969	$	406,720	$	483,269