Inventories (Tables)

3 Months Ended

Apr. 30, 2016

Inventory Disclosure [Abstract]

Schedule of inventories

	April 30, 2016		April 30, 2015		January 31, 2016
	(In thousands)
Finished goods	$	405,658	$	363,458	$	484,805
Raw materials and work-in-process		1,062		7,766		506
	$	406,720	$	371,224	$	485,311