Inventories (Tables)

6 Months Ended

Jul. 31, 2016

Inventory Disclosure [Abstract]

Schedule of inventories

	July 31, 2016		July 31, 2015		January 31, 2016
	(In thousands)
Finished goods	$	567,864	$	600,529	$	484,805
Raw materials and work-in-process		2,132		4,685		506
	$	569,996	$	605,214	$	485,311